Unable to initialize LSP-copilot

[frives-w]

I'm using Copilot with Sublime Text, and today I started getting an error and can't use the package. I can see that the package was recently updated. Is anyone else experiencing this? Any solutions?

Unable to open /home/fran/.config/sublime-text-3/Packages/LSP-copilot/LSP-copilot.sublime-settings
Unable to initialize language server for LSP-copilot
Traceback (most recent call last):
File "/home/fran/.config/sublime-text-3/Installed Packages/LSP.sublime-package/plugin/core/windows.py", line 285, in start_async
transport = config.create_transport_config().start(
File "/home/fran/.config/sublime-text-3/Installed Packages/LSP.sublime-package/plugin/core/transports.py", line 100, in start
process = TransportConfig.resolve_launch_config(command, env, variables).start(
File "/home/fran/.config/sublime-text-3/Installed Packages/LSP.sublime-package/plugin/core/transports.py", line 457, in start
return _start_subprocess(self.command, stdin, stdout, stderr, startupinfo, self.env, cwd)
File "/home/fran/.config/sublime-text-3/Installed Packages/LSP.sublime-package/plugin/core/transports.py", line 566, in _start_subprocess
process = subprocess.Popen(
File "./python3.8/subprocess.py", line 858, in init
File "./python3.8/subprocess.py", line 1704, in _execute_child
PermissionError: [Errno 13] permission denied: ''

[jfcherng]

The most possible issue for this is probably because the copilot binary doesn't have an executable permission, but we have dedicated code to set that. I don't have a clue what goes wrong at this moment.

[gobijan]

Are you on Sublime Dev Build 4205 with the new Python version?

I get "'NoneType' object has no attribute 'storage_path'"

[rchl]

He's not. Can see from the log he's on 3.8.

Check what's the output of:

ls -la "~/.cache/sublime-text/Package Storage/LSP-copilot/"

and then also the relevant subdirectory that contains the binary

[jfcherng]

Are you on Sublime Dev Build 4205 with the new Python version?

I get "'NoneType' object has no attribute 'storage_path'"

Yes I am on 4205. Could you try update LSP or libs (lsp_utils)?

[gobijan]

I reverted to stable and now it works again. So best bet is that it's related to the Dev builds latest changes.

[jfcherng]

The original issue seems to be a one-time issue. After restarting ST, it works. @frives-w

[frives-w]

Unfortunately, it's not working for me. I've tried reinstalling my lsp and lsp-copilot packages, but I'm still having the same problem. I'm still trying to find a solution. Any suggestions are welcome, thank you very much for your help.

[rchl]

You can start by providing output of LSP: Troubleshoot server

[122left]

Seconded. I've got "%1 is not a valid Win32 application" on Windows, build 4200

[jfcherng]

Seconded. I've got "%1 is not a valid Win32 application" on Windows, build 4200

It seems that there is only Windows x64 build for ST now. So you probably just download the official https://github.com/github/copilot-language-server-release/releases/download/1.499.0/copilot-language-server-win32-x64-1.499.0.zip and test whether your machine can run the server binary or get the same error (I mean this is probably not related to ST).

[122left]

I can run the downloaded x64 binary with --stdio. The plugin fails with this trace though:

Package Control: Skipping automatic upgrade, last run at 2026-06-02 19:08:06, next run at 2026-06-03 03:08:06 or after
Unable to open /C/Users/[redacted]/AppData/Roaming/Sublime Text/Packages/LSP-copilot/LSP-copilot.sublime-settings
Unable to initialize language server for LSP-copilot
Traceback (most recent call last):
  File "C:\Users\[redacted]\AppData\Roaming\Sublime Text\Installed Packages\LSP.sublime-package\plugin/core/windows.py", line 320, in start_async
    transport = config.create_transport_config().start(config.command, config.env, cwd, variables, session)
  File "C:\Users\[redacted]\AppData\Roaming\Sublime Text\Installed Packages\LSP.sublime-package\plugin/core/transports.py", line 100, in start
    process = TransportConfig.resolve_launch_config(command, env, variables).start(
  File "C:\Users\[redacted]\AppData\Roaming\Sublime Text\Installed Packages\LSP.sublime-package\plugin/core/transports.py", line 472, in start
    return _start_subprocess(self.command, stdin, stdout, stderr, startupinfo, self.env, cwd)
  File "C:\Users\[redacted]\AppData\Roaming\Sublime Text\Installed Packages\LSP.sublime-package\plugin/core/transports.py", line 581, in _start_subprocess
    process = subprocess.Popen(
  File "./python3.8/subprocess.py", line 858, in __init__
  File "./python3.8/subprocess.py", line 1311, in _execute_child
OSError: [WinError 193] %1 is not a valid Win32 application

[jfcherng]

Thanks for that information but I still failed to reproduce it with a clean portable WindowsX64 ST 4200.

[jfcherng]

Mind sharing your LSP-copilot.sublime-settings?

[122left]

It's an empty JSON with the outer braces.

I don't have much in the way of configuration on the editor. Did read about how this form of error's related to Sublime calling a command outside of a shell environment.

[rchl]

Could it be that the server binary that it's pointing at doesn't exist?

Can you provide the output of LSP: Troubleshoot server command?