undefined method `strip' for nil:NilClass on last version

[gencer]

I got crash on start. Says;

[Error - 2:52:34 PM] Server initialization failed.
  Message: [NoMethodError] undefined method `strip' for nil:NilClass
  Code: -32603 

[gencer]

Ah, It seems this happens on master branch. Downgrading to stable fixes the problem.

[castwide]

Does it give you a stack trace in the developer console?

[gencer]

Yes:

[Extension Host] Solargraph is listening PORT=42381 PID=691450
console.ts:137 [Extension Host] [WARN] Failed to load plugin 'runtime'
console.ts:137 [Extension Host] [WARN] Error processing request: [NoMethodError] undefined method `strip' for nil:NilClass
console.ts:137 [Extension Host] [WARN] /home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/source_map/mapper.rb:158:in `process_directive'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/source_map/mapper.rb:72:in `block in process_comment'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/source_map/mapper.rb:69:in `each'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/source_map/mapper.rb:69:in `process_comment'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/source_map/mapper.rb:206:in `block in process_comment_directives'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/source_map/mapper.rb:203:in `each'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/source_map/mapper.rb:203:in `process_comment_directives'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/source_map/mapper.rb:27:in `map'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/source_map/mapper.rb:50:in `map'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/source_map.rb:156:in `map'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/api_map.rb:85:in `block in catalog'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/api_map.rb:67:in `each'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/api_map.rb:67:in `catalog'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/library.rb:23:in `initialize'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/library.rb:363:in `new'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/library.rb:363:in `load'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/language_server/host.rb:278:in `prepare'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/language_server/host.rb:295:in `block in prepare_folders'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/language_server/host.rb:294:in `each'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/language_server/host.rb:294:in `prepare_folders'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/language_server/message/initialize.rb:14:in `block in process'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/benchmark-0.1.0/lib/benchmark.rb:293:in `measure'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/language_server/message/initialize.rb:10:in `process'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/language_server/host.rb:101:in `receive'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/language_server/transport/adapter.rb:44:in `process'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/language_server/transport/adapter.rb:17:in `block in opening'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/language_server/transport/data_reader.rb:59:in `parse_message_from_buffer'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/language_server/transport/data_reader.rb:35:in `block in receive'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/language_server/transport/data_reader.rb:30:in `each_char'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/language_server/transport/data_reader.rb:30:in `receive'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/solargraph-0.39.9/lib/solargraph/language_server/transport/adapter.rb:27:in `receiving'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/backport-1.1.2/lib/backport/client.rb:63:in `tick'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/backport-1.1.2/lib/backport/server/tcpip.rb:76:in `update'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/2.6.0/observer.rb:197:in `block in notify_observers'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/2.6.0/observer.rb:196:in `each'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/2.6.0/observer.rb:196:in `notify_observers'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/backport-1.1.2/lib/backport/client.rb:121:in `read_input'/home/gencer/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/backport-1.1.2/lib/backport/client.rb:102:in `block in run_input_thread'
notificationsAlerts.ts:40 [NoMethodError] undefined method `strip' for nil:NilClass
onDidChangeNotification @ notificationsAlerts.ts:40
(anonymous) @ notificationsAlerts.ts:26
fire @ event.ts:587
addNotification @ notifications.ts:207
notify @ notificationService.ts:106
(anonymous) @ mainThreadMessageService.ts:83
_showMessage @ mainThreadMessageService.ts:44
$showMessage @ mainThreadMessageService.ts:38
_doInvokeHandler @ rpcProtocol.ts:402
_invokeHandler @ rpcProtocol.ts:387
_receiveRequest @ rpcProtocol.ts:303
_receiveOneMessage @ rpcProtocol.ts:230
(anonymous) @ rpcProtocol.ts:105
fire @ event.ts:587
fire @ ipc.net.ts:453
_receiveMessage @ ipc.net.ts:733
(anonymous) @ ipc.net.ts:592
fire @ event.ts:587
acceptChunk @ ipc.net.ts:239
(anonymous) @ ipc.net.ts:200
t @ ipc.net.ts:28
emit @ events.js:203
addChunk @ _stream_readable.js:295
readableAddChunk @ _stream_readable.js:276
Readable.push @ _stream_readable.js:210
onStreamRead @ internal/stream_base_commons.js:166
console.ts:137 [Extension Host] Error starting Solargraph socket provider Error: [NoMethodError] undefined method `strip' for nil:NilClass
	at new ResponseError (/home/gencer/.vscode-server/extensions/castwide.solargraph-0.21.1/node_modules/vscode-languageclient/node_modules/vscode-jsonrpc/lib/messages.js:46:28)
	at handleResponse (/home/gencer/.vscode-server/extensions/castwide.solargraph-0.21.1/node_modules/vscode-languageclient/node_modules/vscode-jsonrpc/lib/main.js:430:48)
	at processMessageQueue (/home/gencer/.vscode-server/extensions/castwide.solargraph-0.21.1/node_modules/vscode-languageclient/node_modules/vscode-jsonrpc/lib/main.js:258:17)
	at Immediate.<anonymous> (/home/gencer/.vscode-server/extensions/castwide.solargraph-0.21.1/node_modules/vscode-languageclient/node_modules/vscode-jsonrpc/lib/main.js:242:13)
	at processImmediate (internal/timers.js:439:21)
notificationsAlerts.ts:40 Failed to start Solargraph: Error: [NoMethodError] undefined method `strip' for nil:NilClass
onDidChangeNotification @ notificationsAlerts.ts:40
(anonymous) @ notificationsAlerts.ts:26
fire @ event.ts:587
addNotification @ notifications.ts:207
notify @ notificationService.ts:106
(anonymous) @ mainThreadMessageService.ts:83
_showMessage @ mainThreadMessageService.ts:44
$showMessage @ mainThreadMessageService.ts:38
_doInvokeHandler @ rpcProtocol.ts:402
_invokeHandler @ rpcProtocol.ts:387
_receiveRequest @ rpcProtocol.ts:303
_receiveOneMessage @ rpcProtocol.ts:230
(anonymous) @ rpcProtocol.ts:105
fire @ event.ts:587
fire @ ipc.net.ts:453
_receiveMessage @ ipc.net.ts:733
(anonymous) @ ipc.net.ts:592
fire @ event.ts:587
acceptChunk @ ipc.net.ts:239
(anonymous) @ ipc.net.ts:200
t @ ipc.net.ts:28
emit @ events.js:203
addChunk @ _stream_readable.js:295
readableAddChunk @ _stream_readable.js:276
Readable.push @ _stream_readable.js:210
onStreamRead @ internal/stream_base_commons.js:166

[castwide]

Thanks. I suspected it was an issue with a change to @!parse macro handling, and that confirmed it. I'll have a fix in the master branch shortly and it'll be included in the next patch release.

[Syntaf]

👋 I seem to also be running into this issue with the latest release, here's solargraph per my lockfile: See edits below

    solargraph (0.39.10)
      backport (~> 1.1)
      benchmark
      bundler (>= 1.17.2)
      e2mmap
      jaro_winkler (~> 1.5)
      maruku (~> 0.7, >= 0.7.3)
      nokogiri (~> 1.9, >= 1.9.1)
      parser (~> 2.3)
      reverse_markdown (>= 1.0.5, < 3)
      rubocop (~> 0.52)
      thor (~> 1.0)
      tilt (~> 2.0)
      yard (~> 0.9, >= 0.9.24)

In the output tab I'm seeing the following error:

[Error - 4:25:19 PM] Server initialization failed.
  Message: [NoMethodError] undefined method `strip' for nil:NilClass
  Code: -32603 

I unfortunately don't know how to get a stack trace like what @gencer posted. Any recommendations on how to work around this?

If it helps, I'm running the extension inside a container on a codebase with Rails 6 + Ruby 2.7

EDIT: It looks like this error was caused by my rails.rb file, which I originally added after searching for how to add rails definitions. Once I removed this file the error stopped occurring, however I still can't seem to get solargraph to run my linter, working through that atm.

EDIT #2: I had a small syntax error in my rubocop yaml which caused the linter to silently fail 🤦

[jklapacz]

I was having the same problem as @Syntaf, the rails.rb definitions file was causing problems. I removed the explanatory comments and everything worked.
These are the lines I removed:

# The following comments fill some of the gaps in Solargraph's understanding of
# Rails apps. Since they're all in YARD, they get mapped in Solargraph but
# ignored at runtime.
#
# You can put this file anywhere in the project, as long as it gets included in
# the workspace maps. It's recommended that you keep it in a standalone file
# instead of pasting it into an existing one.

[castwide]

Thanks, @jklapacz. I confirmed that I get the same error as @Syntaf and that your workaround fixed it.

I have a hunch what the problem is and will release a patch ASAP.

[castwide]

Also, @Syntaf: that stack trace came from the developer console (Help -> Toggle Developer Tools).

[castwide]

Fix released in v0.39.11.