ElixirLS not working - Runtime terminating during boot

Questions / Help
,
1

Hi, I am trying to get ElixerLS setup in VSCode but getting an error.

This is what I get in the Output tab:

[Info  - 10:14:54 AM] Started ElixirLS v0.13.0
[Info  - 10:14:54 AM] ElixirLS built with elixir "1.12.3" on OTP "22"
[Info  - 10:14:54 AM] Running on elixir "1.14.4 (compiled with Erlang/OTP 26)" on OTP "26"
[Warn  - 10:14:54 AM] OTP compiled without EEP48 documentation chunks. Language features for erlang modules will run in limited mode. Please reinstall or rebuild OTP with approperiate flags.
[Info  - 10:14:54 AM] Elixir sources not found (checking in /home/build/elixir). Code navigation to Elixir modules disabled.
Runtime terminating during boot ({badarg,[{io,put_chars,[standard_error,[_]],[{_},{_},{_}]},{Elixir.Kernel.CLI,exec_fun,2,[{_},{_}]},{Elixir.Kernel.CLI,run,1,[{_},{_}]},{init,start_em,1,[]},{init,do_boot,3,[]}]})

Crash dump is being written to: erl_crash.dump...done
[Error - 10:14:56 AM] The ElixirLS - live_view_studio server crashed 5 times in the last 3 minutes. The server will not be restarted. See the output for more information.
[Error - 10:14:56 AM] Server initialization failed.
  Message: Pending response rejected since connection got disposed
  Code: -32097 
[Error - 10:14:56 AM] ElixirLS - live_view_studio client: couldn't create connection to server.
  Message: Pending response rejected since connection got disposed
  Code: -32097 
[Error - 10:14:56 AM] Restarting server failed
  Message: Pending response rejected since connection got disposed
  Code: -32097

Environment

I am running code . from a WSL2 environment.

I used ASDF to install Elixir and Erlang, and I’m using the latest versions.

$ elixir --version
Erlang/OTP 26 [erts-14.0] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [jit:ns]

Elixir 1.14.4 (compiled with Erlang/OTP 26)

Basic troubleshooting steps

I have tried following the Troubleshooting steps in the readme…

  • Restart ElixirLS with a custom command restart

I ran Elixir: Restart Language Server and got an error messagebox:

Command 'Elixir: Restart language server' resulted in an error (Cannot read properties of undefined (reading 'capabilities'))
  • Run mix clean or mix clean --deps in ElixirLS with custom command mixClean

I ran Elixir: Trigger mix clean --deps in language server and got an error messagebox:

Command 'Elixir: Trigger mix clean --deps in language server' resulted in an error (Cannot read properties of undefined (reading 'capabilities'))
  • Restart your editor (which will restart ElixirLS)

This had no effect.

  • After stopping your editor, remove the entire .elixir_ls directory, then restart your editor

I have no .elixir_ls directory

2 Likes
2

I am running into the same problem.

I’m on a Mac M1 MBP.

elixir --version reports:

Erlang/OTP 26 [erts-14.0] [source] [64-bit] [smp:10:10] [ds:10:10:10] [async-threads:1] [jit]

Elixir 1.14.5 (compiled with Erlang/OTP 26)

VS Code reports:

Version: 1.78.2 (Universal)
Commit: b3e4e68a0bc097f0ae7907b217c1119af9e03435
Date: 2023-05-10T14:44:45.204Z (1 wk ago)
Electron: 22.5.2
Chromium: 108.0.5359.215
Node.js: 16.17.1
V8: 10.8.168.25-electron.0
OS: Darwin arm64 22.4.0
Sandboxed: No
3

I also run into the same problem in my new MBP M2. It might has to do with Erlang/OTP 26 or asdf itself.

The workaround was to install Erlang and Elixir via Homebrew where I noticed that it installed the latest version of Erlang/OTP 25 (not 26).

4

Rolling back to OTP 25 worked for me as well.

5

The same problem. OTP 25.3.2 with elixir 1.14.4 is working excellent, OTP 26.0 with elixir 1.14.5 generate errors: “ElixirLS - sgf-parsing client: couldn’t create connection to server.”

Starting ElixirLS release v0.14.6
Running in /home/leszek/exercism/elixir/sgf-parsing
[Info  - 12:45:25 PM] Started ElixirLS v0.14.6
[Info  - 12:45:25 PM] Running in /home/leszek/exercism/elixir/sgf-parsing
[Info  - 12:45:25 PM] ElixirLS built with elixir "1.14.5" on OTP "26"
[Info  - 12:45:25 PM] Running on elixir "1.14.5 (compiled with Erlang/OTP 26)" on OTP "26"
[Info  - 12:45:25 PM] Protocols are not consolidated
Runtime terminating during boot ({badarg,[{io,put_chars,[standard_error,[_]],[{_},{_},{_}]},{Elixir.Kernel.CLI,exec_fun,2,[{_},{_}]},{Elixir.Kernel.CLI,run,1,[{_},{_}]},{init,start_em,1,[]},{init,do_boot,3,[]}]})

Crash dump is being written to: erl_crash.dump...done
[Error - 12:45:27 PM] Server initialization failed.
  Message: Pending response rejected since connection got disposed
  Code: -32097 
[Info  - 12:45:27 PM] Connection to server got closed. Server will restart.
true
[Error - 12:45:27 PM] ElixirLS - sgf-parsing client: couldn't create connection to server.
  Message: Pending response rejected since connection got disposed
  Code: -32097
1 Like
6

OTP 26 is currently not supported, see: Not starting on OTP26 · Issue #886 · elixir-lsp/elixir-ls · GitHub

5 Likes
7

I know. I’ve presented errors to help create a solution.

1 Like
8

Thanks.
Getting OTP 25.3.2 with elixir 1.14.4 in asdf worked.

9

ElixirLS 0.15.1 released with support for OTP 26.0.2+

3 Likes
10

Starting out using Elixir and ran into this on Windows. It may be worth noting for others that the chocolatey installation for Elixir/OTP at the time of writing is a little behind - just enough so that ElixirLS doesn’t start properly.

The fact the the extension is not working right due to the language server crashing is not obvious from vscode. You have to open the log (Ctrl-Shft-P, Developer: Open Extension Logs Folder) and look at the log; and also look at the Output for the ElixirLS extension.

To resolve it I just had to uninstall via chocolatey, and reinstall via the “Using Windows installers” methods here: Installing Elixir - The Elixir programming language - this way you can get versions that are up to date.

UPDATE: See @lukaszsamson note below - indeed OTP 26 proved unstable. I uninstalled OTP and used chocolatey to install a v25 version of OTP; then used the Windows installer link here Elixir 1.15.7 on Erlang 25. ElixerLS is running once again.

11

Please note that OTP 26.0 - 26.1.2 has critical bugs on Windows making ElixirLS unusable. 26.0 will crash on start, 21.1 will partially work but crash often in runtime. Until a fix for OTP 26 writes corrupted messages to stdout in latin1 mode on Windows · Issue #7838 · erlang/otp · GitHub is released I recommend downgrading to OTP 25

2 Likes
12

Thanks. I am indeed seeing it crash a lot as I play with it.

13

I’m on macOS 12.5.1, and I intermittently get the error:

The elixir server crashed 5 times in last 3 minutes. The server will not be restarted.

$ asdf list erlang
  24.3.4
 *26.1.2

$ asdf list elixir
  1.13.4
  1.14.4-otp-24
 *1.16.0-rc.1-otp-26

phoenix 1.7.10

ElixrLS v0.18.0
vscode 1.85.1
14

You are running a not supported elixir rc version. Please try on official release. Also please include some actual logs. Note that OTP < 26.0.2 is broken on all platforms so make sure your elixir instal actually uses 26.1.2

1 Like
15

Thanks for the response and the advice about the elixir version. I just installed:

elixir 1.16.0-otp-26

and I checked my erlang version and it is:

erlang 26.1.2

  $ asdf list elixir
  1.13.4
  1.14.4-otp-24
 *1.16.0-otp-26
  1.16.0-rc.1-otp-26

 $ asdf list erlang
  24.3.4
 *26.1.2

I’ll keep on eye on ElixirLS going forward. Do you still want the logs?

16

Please open an issue with the logs if it’s still crashing

1 Like