Erlang LS server crashed

[rlipscombe]

(not a duplicate of #71; that was resolved by an upgrade)

ErlangLS in VS Code is unable to talk to the server:

[Info  - 1:50:16 PM] Connection to server got closed. Server will restart.
[Error - 1:50:16 PM] Request textDocument/codeAction failed.
Error: Connection got disposed.
	at Object.dispose (/Users/rogerlipscombe/.vscode/extensions/erlang-ls.erlang-ls-0.0.39/client/node_modules/vscode-jsonrpc/lib/common/connection.js:1044:27)
	at Object.dispose (/Users/rogerlipscombe/.vscode/extensions/erlang-ls.erlang-ls-0.0.39/client/node_modules/vscode-languageclient/lib/common/client.js:73:35)
	at LanguageClient.handleConnectionClosed (/Users/rogerlipscombe/.vscode/extensions/erlang-ls.erlang-ls-0.0.39/client/node_modules/vscode-languageclient/lib/common/client.js:2424:42)
	at LanguageClient.handleConnectionClosed (/Users/rogerlipscombe/.vscode/extensions/erlang-ls.erlang-ls-0.0.39/client/node_modules/vscode-languageclient/lib/node/main.js:155:15)
	at closeHandler (/Users/rogerlipscombe/.vscode/extensions/erlang-ls.erlang-ls-0.0.39/client/node_modules/vscode-languageclient/lib/common/client.js:2411:18)
	at CallbackList.invoke (/Users/rogerlipscombe/.vscode/extensions/erlang-ls.erlang-ls-0.0.39/client/node_modules/vscode-jsonrpc/lib/common/events.js:55:39)
	at Emitter.fire (/Users/rogerlipscombe/.vscode/extensions/erlang-ls.erlang-ls-0.0.39/client/node_modules/vscode-jsonrpc/lib/common/events.js:117:36)
	at closeHandler (/Users/rogerlipscombe/.vscode/extensions/erlang-ls.erlang-ls-0.0.39/client/node_modules/vscode-jsonrpc/lib/common/connection.js:256:26)
	at CallbackList.invoke (/Users/rogerlipscombe/.vscode/extensions/erlang-ls.erlang-ls-0.0.39/client/node_modules/vscode-jsonrpc/lib/common/events.js:55:39)
	at Emitter.fire (/Users/rogerlipscombe/.vscode/extensions/erlang-ls.erlang-ls-0.0.39/client/node_modules/vscode-jsonrpc/lib/common/events.js:117:36)
	at StreamMessageWriter.fireClose (/Users/rogerlipscombe/.vscode/extensions/erlang-ls.erlang-ls-0.0.39/client/node_modules/vscode-jsonrpc/lib/common/messageWriter.js:42:27)
	at Socket.<anonymous> (/Users/rogerlipscombe/.vscode/extensions/erlang-ls.erlang-ls-0.0.39/client/node_modules/vscode-jsonrpc/lib/common/messageWriter.js:75:42)
	at Socket.emit (node:events:526:28)
	at Socket.emit (node:domain:475:12)
	at Pipe.<anonymous> (node:net:687:12)

This is not necessarily a surprise to me, because I'm using a development build of Erlang/OTP:

Erlang/OTP 26 [DEVELOPMENT] [erts-13.1.3] [source-a696bdf8de] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [jit]

...which I've awkwardly wedged into my direnv/kerl setup.

My question is this: how can I investigate this?

erlang_ls works fine with the version of Erlang as-built:

% which erl
/Users/rogerlipscombe/.kerl/erlangs/source/bin/erl
% .vscode/extensions/erlang-ls.erlang-ls-0.0.39/erlang_ls/_build/default/bin/erlang_ls --version
Version: 0.44.1

...so why isn't it working correctly when used from VS Code? What logs can I look in?

[robertoaloi]

Hi @rlipscombe , did you already try to look at the logs or to attach to a running instance as described here?

[robertoaloi]

Hi @rlipscombe , did you already try to look at the logs or to attach to a running instance as described here?

[rlipscombe]

Thanks. Not yet, no. I'll dig more into it tomorrow, once I'm back on the work laptop where this is happening.

[joaohf]

Hello,

I'm having almost the same issue. Any hint about how to better debug it ?

Here are the vscode output and erlang_ls log. I'm using the same versions as @rlipscombe.

vscode_output.txt
server.log

Thanks

[sefarious]

Hello,

I'm having almost the same issue. Any hint about how to better debug it ?

Here are the vscode output and erlang_ls log. I'm using the same versions as @rlipscombe.

vscode_output.txt server.log

Thanks

Have you checked rebar3 path in the settings? It seems to me that's what causes that server start failure.