Does not work with windows 11.

[swallowvski]

I have installed scala using Coursier. And I installed metals in vscode, but I am getting the error Metals client: couldn't create connection to server. The metals doesn't work except for syntax highlighting. How can I get metals to work? Also, I did not find .bloop in the user directory.

OS : windows11

scala verision: 3.2.2

sbt version: 1.8.2

metals version(in vscode) : 1.21.0

metals log

Java home: C:\Users\username\AppData\Local\Coursier\cache\arc\https\github.com\AdoptOpenJDK\openjdk8-binaries\releases\download\jdk8u292-b10\OpenJDK8U-jdk_x64_windows_hotspot_8u292b10.zip\jdk8u292-b10
Metals version: 0.11.10
[Error - 20:35:05] Server initialization failed.
  Message: Internal error.
  Code: -32603 
java.util.concurrent.CompletionException: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
	at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:661)
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:646)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
	at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:29)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:26)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:484)
	at scala.concurrent.ExecutionContext$parasitic$.execute(ExecutionContext.scala:222)
	at scala.concurrent.impl.Promise$Transformation.submitWithValue(Promise.scala:429)
	at scala.concurrent.impl.Promise$DefaultPromise.submitWithValue(Promise.scala:338)
	at scala.concurrent.impl.Promise$DefaultPromise.tryComplete0(Promise.scala:285)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:504)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI.create(URI.java:852)
	at scala.meta.internal.mtags.MtagsEnrichments$XtensionStringMtags.toAbsolutePath(MtagsEnrichments.scala:158)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:609)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:606)
	at scala.meta.internal.metals.MetalsLanguageServer.updateWorkspaceDirectory(MetalsLanguageServer.scala:365)
	at scala.meta.internal.metals.MetalsLanguageServer.$anonfun$initialize$2(MetalsLanguageServer.scala:879)
	at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:678)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:467)
	... 3 more
Caused by: java.net.URISyntaxException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI$Parser.fail(URI.java:2847)
	at java.net.URI$Parser.checkChars(URI.java:3020)
	at java.net.URI$Parser.parseHierarchical(URI.java:3104)
	at java.net.URI$Parser.parse(URI.java:3052)
	at java.net.URI.<init>(URI.java:588)
	at java.net.URI.create(URI.java:850)
	... 10 more

[Error - 20:35:05] Metals client: couldn't create connection to server.
  Message: Internal error.
  Code: -32603 
java.util.concurrent.CompletionException: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
	at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:661)
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:646)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
	at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:29)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:26)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:484)
	at scala.concurrent.ExecutionContext$parasitic$.execute(ExecutionContext.scala:222)
	at scala.concurrent.impl.Promise$Transformation.submitWithValue(Promise.scala:429)
	at scala.concurrent.impl.Promise$DefaultPromise.submitWithValue(Promise.scala:338)
	at scala.concurrent.impl.Promise$DefaultPromise.tryComplete0(Promise.scala:285)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:504)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI.create(URI.java:852)
	at scala.meta.internal.mtags.MtagsEnrichments$XtensionStringMtags.toAbsolutePath(MtagsEnrichments.scala:158)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:609)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:606)
	at scala.meta.internal.metals.MetalsLanguageServer.updateWorkspaceDirectory(MetalsLanguageServer.scala:365)
	at scala.meta.internal.metals.MetalsLanguageServer.$anonfun$initialize$2(MetalsLanguageServer.scala:879)
	at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:678)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:467)
	... 3 more
Caused by: java.net.URISyntaxException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI$Parser.fail(URI.java:2847)
	at java.net.URI$Parser.checkChars(URI.java:3020)
	at java.net.URI$Parser.parseHierarchical(URI.java:3104)
	at java.net.URI$Parser.parse(URI.java:3052)
	at java.net.URI.<init>(URI.java:588)
	at java.net.URI.create(URI.java:850)
	... 10 more

Could not launch Metals Language Server:
Internal error.
Release notes was not shown: not showing release notes since they've already been seen for your current version
[Info  - 20:35:08] Connection to server got closed. Server will restart.
[Error - 20:35:10] Server initialization failed.
  Message: Internal error.
  Code: -32603 
java.util.concurrent.CompletionException: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
	at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:661)
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:646)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
	at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:29)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:26)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:484)
	at scala.concurrent.ExecutionContext$parasitic$.execute(ExecutionContext.scala:222)
	at scala.concurrent.impl.Promise$Transformation.submitWithValue(Promise.scala:429)
	at scala.concurrent.impl.Promise$DefaultPromise.submitWithValue(Promise.scala:338)
	at scala.concurrent.impl.Promise$DefaultPromise.tryComplete0(Promise.scala:285)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:504)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI.create(URI.java:852)
	at scala.meta.internal.mtags.MtagsEnrichments$XtensionStringMtags.toAbsolutePath(MtagsEnrichments.scala:158)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:609)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:606)
	at scala.meta.internal.metals.MetalsLanguageServer.updateWorkspaceDirectory(MetalsLanguageServer.scala:365)
	at scala.meta.internal.metals.MetalsLanguageServer.$anonfun$initialize$2(MetalsLanguageServer.scala:879)
	at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:678)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:467)
	... 3 more
Caused by: java.net.URISyntaxException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI$Parser.fail(URI.java:2847)
	at java.net.URI$Parser.checkChars(URI.java:3020)
	at java.net.URI$Parser.parseHierarchical(URI.java:3104)
	at java.net.URI$Parser.parse(URI.java:3052)
	at java.net.URI.<init>(URI.java:588)
	at java.net.URI.create(URI.java:850)
	... 10 more

[Error - 20:35:10] Metals client: couldn't create connection to server.
  Message: Internal error.
  Code: -32603 
java.util.concurrent.CompletionException: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
	at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:661)
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:646)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
	at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:29)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:26)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:484)
	at scala.concurrent.ExecutionContext$parasitic$.execute(ExecutionContext.scala:222)
	at scala.concurrent.impl.Promise$Transformation.submitWithValue(Promise.scala:429)
	at scala.concurrent.impl.Promise$DefaultPromise.submitWithValue(Promise.scala:338)
	at scala.concurrent.impl.Promise$DefaultPromise.tryComplete0(Promise.scala:285)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:504)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI.create(URI.java:852)
	at scala.meta.internal.mtags.MtagsEnrichments$XtensionStringMtags.toAbsolutePath(MtagsEnrichments.scala:158)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:609)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:606)
	at scala.meta.internal.metals.MetalsLanguageServer.updateWorkspaceDirectory(MetalsLanguageServer.scala:365)
	at scala.meta.internal.metals.MetalsLanguageServer.$anonfun$initialize$2(MetalsLanguageServer.scala:879)
	at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:678)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:467)
	... 3 more
Caused by: java.net.URISyntaxException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI$Parser.fail(URI.java:2847)
	at java.net.URI$Parser.checkChars(URI.java:3020)
	at java.net.URI$Parser.parseHierarchical(URI.java:3104)
	at java.net.URI$Parser.parse(URI.java:3052)
	at java.net.URI.<init>(URI.java:588)
	at java.net.URI.create(URI.java:850)
	... 10 more

[Error - 20:35:10] Restarting server failed
  Message: Internal error.
  Code: -32603 
java.util.concurrent.CompletionException: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
	at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:661)
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:646)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
	at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:29)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:26)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:484)
	at scala.concurrent.ExecutionContext$parasitic$.execute(ExecutionContext.scala:222)
	at scala.concurrent.impl.Promise$Transformation.submitWithValue(Promise.scala:429)
	at scala.concurrent.impl.Promise$DefaultPromise.submitWithValue(Promise.scala:338)
	at scala.concurrent.impl.Promise$DefaultPromise.tryComplete0(Promise.scala:285)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:504)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI.create(URI.java:852)
	at scala.meta.internal.mtags.MtagsEnrichments$XtensionStringMtags.toAbsolutePath(MtagsEnrichments.scala:158)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:609)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:606)
	at scala.meta.internal.metals.MetalsLanguageServer.updateWorkspaceDirectory(MetalsLanguageServer.scala:365)
	at scala.meta.internal.metals.MetalsLanguageServer.$anonfun$initialize$2(MetalsLanguageServer.scala:879)
	at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:678)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:467)
	... 3 more
Caused by: java.net.URISyntaxException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI$Parser.fail(URI.java:2847)
	at java.net.URI$Parser.checkChars(URI.java:3020)
	at java.net.URI$Parser.parseHierarchical(URI.java:3104)
	at java.net.URI$Parser.parse(URI.java:3052)
	at java.net.URI.<init>(URI.java:588)
	at java.net.URI.create(URI.java:850)
	... 10 more

[Info  - 20:35:12] Connection to server got closed. Server will restart.
[Error - 20:35:14] Server initialization failed.
  Message: Internal error.
  Code: -32603 
java.util.concurrent.CompletionException: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
	at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:661)
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:646)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
	at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:29)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:26)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:484)
	at scala.concurrent.ExecutionContext$parasitic$.execute(ExecutionContext.scala:222)
	at scala.concurrent.impl.Promise$Transformation.submitWithValue(Promise.scala:429)
	at scala.concurrent.impl.Promise$DefaultPromise.submitWithValue(Promise.scala:338)
	at scala.concurrent.impl.Promise$DefaultPromise.tryComplete0(Promise.scala:285)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:504)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI.create(URI.java:852)
	at scala.meta.internal.mtags.MtagsEnrichments$XtensionStringMtags.toAbsolutePath(MtagsEnrichments.scala:158)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:609)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:606)
	at scala.meta.internal.metals.MetalsLanguageServer.updateWorkspaceDirectory(MetalsLanguageServer.scala:365)
	at scala.meta.internal.metals.MetalsLanguageServer.$anonfun$initialize$2(MetalsLanguageServer.scala:879)
	at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:678)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:467)
	... 3 more
Caused by: java.net.URISyntaxException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI$Parser.fail(URI.java:2847)
	at java.net.URI$Parser.checkChars(URI.java:3020)
	at java.net.URI$Parser.parseHierarchical(URI.java:3104)
	at java.net.URI$Parser.parse(URI.java:3052)
	at java.net.URI.<init>(URI.java:588)
	at java.net.URI.create(URI.java:850)
	... 10 more

[Error - 20:35:14] Metals client: couldn't create connection to server.
  Message: Internal error.
  Code: -32603 
java.util.concurrent.CompletionException: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
	at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:661)
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:646)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
	at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:29)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:26)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:484)
	at scala.concurrent.ExecutionContext$parasitic$.execute(ExecutionContext.scala:222)
	at scala.concurrent.impl.Promise$Transformation.submitWithValue(Promise.scala:429)
	at scala.concurrent.impl.Promise$DefaultPromise.submitWithValue(Promise.scala:338)
	at scala.concurrent.impl.Promise$DefaultPromise.tryComplete0(Promise.scala:285)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:504)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI.create(URI.java:852)
	at scala.meta.internal.mtags.MtagsEnrichments$XtensionStringMtags.toAbsolutePath(MtagsEnrichments.scala:158)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:609)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:606)
	at scala.meta.internal.metals.MetalsLanguageServer.updateWorkspaceDirectory(MetalsLanguageServer.scala:365)
	at scala.meta.internal.metals.MetalsLanguageServer.$anonfun$initialize$2(MetalsLanguageServer.scala:879)
	at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:678)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:467)
	... 3 more
Caused by: java.net.URISyntaxException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI$Parser.fail(URI.java:2847)
	at java.net.URI$Parser.checkChars(URI.java:3020)
	at java.net.URI$Parser.parseHierarchical(URI.java:3104)
	at java.net.URI$Parser.parse(URI.java:3052)
	at java.net.URI.<init>(URI.java:588)
	at java.net.URI.create(URI.java:850)
	... 10 more

[Error - 20:35:14] Restarting server failed
  Message: Internal error.
  Code: -32603 
java.util.concurrent.CompletionException: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
	at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:661)
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:646)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
	at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:29)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:26)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:484)
	at scala.concurrent.ExecutionContext$parasitic$.execute(ExecutionContext.scala:222)
	at scala.concurrent.impl.Promise$Transformation.submitWithValue(Promise.scala:429)
	at scala.concurrent.impl.Promise$DefaultPromise.submitWithValue(Promise.scala:338)
	at scala.concurrent.impl.Promise$DefaultPromise.tryComplete0(Promise.scala:285)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:504)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI.create(URI.java:852)
	at scala.meta.internal.mtags.MtagsEnrichments$XtensionStringMtags.toAbsolutePath(MtagsEnrichments.scala:158)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:609)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:606)
	at scala.meta.internal.metals.MetalsLanguageServer.updateWorkspaceDirectory(MetalsLanguageServer.scala:365)
	at scala.meta.internal.metals.MetalsLanguageServer.$anonfun$initialize$2(MetalsLanguageServer.scala:879)
	at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:678)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:467)
	... 3 more
Caused by: java.net.URISyntaxException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI$Parser.fail(URI.java:2847)
	at java.net.URI$Parser.checkChars(URI.java:3020)
	at java.net.URI$Parser.parseHierarchical(URI.java:3104)
	at java.net.URI$Parser.parse(URI.java:3052)
	at java.net.URI.<init>(URI.java:588)
	at java.net.URI.create(URI.java:850)
	... 10 more

[Info  - 20:35:16] Connection to server got closed. Server will restart.
[Error - 20:35:19] Server initialization failed.
  Message: Internal error.
  Code: -32603 
java.util.concurrent.CompletionException: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
	at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:661)
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:646)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
	at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:29)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:26)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:484)
	at scala.concurrent.ExecutionContext$parasitic$.execute(ExecutionContext.scala:222)
	at scala.concurrent.impl.Promise$Transformation.submitWithValue(Promise.scala:429)
	at scala.concurrent.impl.Promise$DefaultPromise.submitWithValue(Promise.scala:338)
	at scala.concurrent.impl.Promise$DefaultPromise.tryComplete0(Promise.scala:285)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:504)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI.create(URI.java:852)
	at scala.meta.internal.mtags.MtagsEnrichments$XtensionStringMtags.toAbsolutePath(MtagsEnrichments.scala:158)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:609)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:606)
	at scala.meta.internal.metals.MetalsLanguageServer.updateWorkspaceDirectory(MetalsLanguageServer.scala:365)
	at scala.meta.internal.metals.MetalsLanguageServer.$anonfun$initialize$2(MetalsLanguageServer.scala:879)
	at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:678)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:467)
	... 3 more
Caused by: java.net.URISyntaxException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI$Parser.fail(URI.java:2847)
	at java.net.URI$Parser.checkChars(URI.java:3020)
	at java.net.URI$Parser.parseHierarchical(URI.java:3104)
	at java.net.URI$Parser.parse(URI.java:3052)
	at java.net.URI.<init>(URI.java:588)
	at java.net.URI.create(URI.java:850)
	... 10 more

[Error - 20:35:19] Metals client: couldn't create connection to server.
  Message: Internal error.
  Code: -32603 
java.util.concurrent.CompletionException: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
	at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:661)
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:646)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
	at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:29)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:26)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:484)
	at scala.concurrent.ExecutionContext$parasitic$.execute(ExecutionContext.scala:222)
	at scala.concurrent.impl.Promise$Transformation.submitWithValue(Promise.scala:429)
	at scala.concurrent.impl.Promise$DefaultPromise.submitWithValue(Promise.scala:338)
	at scala.concurrent.impl.Promise$DefaultPromise.tryComplete0(Promise.scala:285)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:504)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI.create(URI.java:852)
	at scala.meta.internal.mtags.MtagsEnrichments$XtensionStringMtags.toAbsolutePath(MtagsEnrichments.scala:158)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:609)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:606)
	at scala.meta.internal.metals.MetalsLanguageServer.updateWorkspaceDirectory(MetalsLanguageServer.scala:365)
	at scala.meta.internal.metals.MetalsLanguageServer.$anonfun$initialize$2(MetalsLanguageServer.scala:879)
	at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:678)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:467)
	... 3 more
Caused by: java.net.URISyntaxException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI$Parser.fail(URI.java:2847)
	at java.net.URI$Parser.checkChars(URI.java:3020)
	at java.net.URI$Parser.parseHierarchical(URI.java:3104)
	at java.net.URI$Parser.parse(URI.java:3052)
	at java.net.URI.<init>(URI.java:588)
	at java.net.URI.create(URI.java:850)
	... 10 more

[Error - 20:35:19] Restarting server failed
  Message: Internal error.
  Code: -32603 
java.util.concurrent.CompletionException: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
	at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:661)
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:646)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
	at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:29)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:26)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:484)
	at scala.concurrent.ExecutionContext$parasitic$.execute(ExecutionContext.scala:222)
	at scala.concurrent.impl.Promise$Transformation.submitWithValue(Promise.scala:429)
	at scala.concurrent.impl.Promise$DefaultPromise.submitWithValue(Promise.scala:338)
	at scala.concurrent.impl.Promise$DefaultPromise.tryComplete0(Promise.scala:285)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:504)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI.create(URI.java:852)
	at scala.meta.internal.mtags.MtagsEnrichments$XtensionStringMtags.toAbsolutePath(MtagsEnrichments.scala:158)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:609)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:606)
	at scala.meta.internal.metals.MetalsLanguageServer.updateWorkspaceDirectory(MetalsLanguageServer.scala:365)
	at scala.meta.internal.metals.MetalsLanguageServer.$anonfun$initialize$2(MetalsLanguageServer.scala:879)
	at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:678)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:467)
	... 3 more
Caused by: java.net.URISyntaxException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI$Parser.fail(URI.java:2847)
	at java.net.URI$Parser.checkChars(URI.java:3020)
	at java.net.URI$Parser.parseHierarchical(URI.java:3104)
	at java.net.URI$Parser.parse(URI.java:3052)
	at java.net.URI.<init>(URI.java:588)
	at java.net.URI.create(URI.java:850)
	... 10 more

[Info  - 20:35:21] Connection to server got closed. Server will restart.
[Error - 20:35:23] Server initialization failed.
  Message: Internal error.
  Code: -32603 
java.util.concurrent.CompletionException: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
	at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:661)
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:646)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
	at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:29)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:26)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:484)
	at scala.concurrent.ExecutionContext$parasitic$.execute(ExecutionContext.scala:222)
	at scala.concurrent.impl.Promise$Transformation.submitWithValue(Promise.scala:429)
	at scala.concurrent.impl.Promise$DefaultPromise.submitWithValue(Promise.scala:338)
	at scala.concurrent.impl.Promise$DefaultPromise.tryComplete0(Promise.scala:285)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:504)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI.create(URI.java:852)
	at scala.meta.internal.mtags.MtagsEnrichments$XtensionStringMtags.toAbsolutePath(MtagsEnrichments.scala:158)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:609)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:606)
	at scala.meta.internal.metals.MetalsLanguageServer.updateWorkspaceDirectory(MetalsLanguageServer.scala:365)
	at scala.meta.internal.metals.MetalsLanguageServer.$anonfun$initialize$2(MetalsLanguageServer.scala:879)
	at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:678)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:467)
	... 3 more
Caused by: java.net.URISyntaxException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI$Parser.fail(URI.java:2847)
	at java.net.URI$Parser.checkChars(URI.java:3020)
	at java.net.URI$Parser.parseHierarchical(URI.java:3104)
	at java.net.URI$Parser.parse(URI.java:3052)
	at java.net.URI.<init>(URI.java:588)
	at java.net.URI.create(URI.java:850)
	... 10 more

[Error - 20:35:23] Metals client: couldn't create connection to server.
  Message: Internal error.
  Code: -32603 
java.util.concurrent.CompletionException: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
	at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:661)
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:646)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
	at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:29)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:26)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:484)
	at scala.concurrent.ExecutionContext$parasitic$.execute(ExecutionContext.scala:222)
	at scala.concurrent.impl.Promise$Transformation.submitWithValue(Promise.scala:429)
	at scala.concurrent.impl.Promise$DefaultPromise.submitWithValue(Promise.scala:338)
	at scala.concurrent.impl.Promise$DefaultPromise.tryComplete0(Promise.scala:285)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:504)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI.create(URI.java:852)
	at scala.meta.internal.mtags.MtagsEnrichments$XtensionStringMtags.toAbsolutePath(MtagsEnrichments.scala:158)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:609)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:606)
	at scala.meta.internal.metals.MetalsLanguageServer.updateWorkspaceDirectory(MetalsLanguageServer.scala:365)
	at scala.meta.internal.metals.MetalsLanguageServer.$anonfun$initialize$2(MetalsLanguageServer.scala:879)
	at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:678)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:467)
	... 3 more
Caused by: java.net.URISyntaxException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI$Parser.fail(URI.java:2847)
	at java.net.URI$Parser.checkChars(URI.java:3020)
	at java.net.URI$Parser.parseHierarchical(URI.java:3104)
	at java.net.URI$Parser.parse(URI.java:3052)
	at java.net.URI.<init>(URI.java:588)
	at java.net.URI.create(URI.java:850)
	... 10 more

[Error - 20:35:23] Restarting server failed
  Message: Internal error.
  Code: -32603 
java.util.concurrent.CompletionException: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
	at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:661)
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:646)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
	at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:29)
	at scala.concurrent.java8.FuturesConvertersImpl$CF.apply(FutureConvertersImpl.scala:26)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:484)
	at scala.concurrent.ExecutionContext$parasitic$.execute(ExecutionContext.scala:222)
	at scala.concurrent.impl.Promise$Transformation.submitWithValue(Promise.scala:429)
	at scala.concurrent.impl.Promise$DefaultPromise.submitWithValue(Promise.scala:338)
	at scala.concurrent.impl.Promise$DefaultPromise.tryComplete0(Promise.scala:285)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:504)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: Illegal character in path at index 23: file:///c:/Users/username/source/repos/hello
	at java.net.URI.create(URI.java:852)
	at scala.meta.internal.mtags.MtagsEnrichments$XtensionStringMtags.toAbsolutePath(MtagsEnrichments.scala:158)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:609)
	at scala.meta.internal.metals.MetalsEnrichments$XtensionString.toAbsolutePath(MetalsEnrichments.scala:606)
	at scala.meta.internal.metals.MetalsLanguageServer.updateWorkspaceDirectory(MetalsLanguageServer.scala:365)
	at scala.meta.internal.metals.MetalsLanguageServer.$anonfun$initialize$2(MetalsLanguageServer.scala:879)
	at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:678)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:468)
	... 3 more
Caused by: java.net.URISyntaxException: Illegal character in path at index 24: file:///c:/Users/username/source/repos/hello
	at java.net.URI$Parser.fail(URI.java:2847)
	at java.net.URI$Parser.checkChars(URI.java:3020)
	at java.net.URI$Parser.parseHierarchical(URI.java:3104)
	at java.net.URI$Parser.parse(URI.java:3052)
	at java.net.URI.<init>(URI.java:588)
	at java.net.URI.create(URI.java:850)
	... 10 more

[Error - 20:35:25] The Metals server crashed 5 times in the last 3 minutes. The server will not be restarted. See the output for more information.

[tgodzik]

Could you try setting the prerelease version? It should have that issue fixed. It should be possible to switch it in the extension tab.

The prerelease should become a stable version soon.

[swallowvski]

Oh!!It worked! Thank you.