Exception: java.util.concurrent.CompletionException: java.io.IOException

[luccascorrea]

---

What happened

I was testing a flutter app. I pressed the back button on my phone until the app was closed.
Then I reopened the app from the multitasking menu and clicked on the "Run" button on Intellij, so
it would restart the app.

Version information

Android Studio 3.1.2 • Flutter plugin io.flutter 24.2.1 • Dart plugin 173.4700

Flutter 0.3.2 • channel beta • https://github.com/flutter/flutter.git
Framework • revision 44b7e7d3f4 (3 weeks ago) • 2018-04-20 01:02:44 -0700
Engine • revision 09d05a3891
Tools • Dart 2.0.0-dev.48.0.flutter-fe606f890b

Exception

java.io.IOException: unexpected response: {"id":8,"error":"Bad state: No element"}

java.util.concurrent.CompletionException: java.io.IOException: unexpected response: {"id":8,"error":"Bad state: No element"}
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
	at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:593)
	at java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:577)
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
	at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1977)
	at io.flutter.run.daemon.DaemonApi$Command.completeExceptionally(DaemonApi.java:365)
	at io.flutter.run.daemon.DaemonApi.dispatch(DaemonApi.java:171)
	at io.flutter.run.daemon.DaemonApi$1.onTextAvailable(DaemonApi.java:131)
	at sun.reflect.GeneratedMethodAccessor59.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.intellij.execution.process.ProcessHandler$5.invoke(ProcessHandler.java:239)
	at com.sun.proxy.$Proxy16.onTextAvailable(Unknown Source)
	at com.intellij.execution.process.ProcessHandler.notifyTextAvailable(ProcessHandler.java:213)
	at com.intellij.execution.process.BaseOSProcessHandler$SimpleOutputReader.onTextAvailable(BaseOSProcessHandler.java:295)
	at com.intellij.util.io.BaseOutputReader.sendText(BaseOutputReader.java:202)
	at com.intellij.util.io.BaseOutputReader.processInput(BaseOutputReader.java:186)
	at com.intellij.util.io.BaseOutputReader.readAvailableNonBlocking(BaseOutputReader.java:105)
	at com.intellij.util.io.BaseDataReader.readAvailable(BaseDataReader.java:85)
	at com.intellij.util.io.BaseDataReader.doRun(BaseDataReader.java:163)
	at com.intellij.util.io.BaseDataReader$1$1.run(BaseDataReader.java:66)
	at com.intellij.util.ConcurrencyUtil.runUnderThreadName(ConcurrencyUtil.java:194)
	at com.intellij.util.io.BaseDataReader$1.run(BaseDataReader.java:63)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: unexpected response: {"id":8,"error":"Bad state: No element"}
	... 22 more

[stevemessick]

See additional repro instructions in #2405

[stevemessick]

The root cause of this problem is an error thrown by the Dart code in the flutter tool. Without more information there isn't much we can do. See #2657 for more detail.