unhandled exception (Python, Node.js, or other runtime error).

[shyyan85]

Date: 10/15/2025 19:00:13
Exception:
ScreenBrightness Exception:
Websites: https://github.com/cibere/Flow.Launcher.Plugin.ScreenBrightness
Author: cibere
Version: 0.0.10
Flow.Launcher.Core.ExternalPlugins.FlowPluginException: The JSON-RPC connection with the remote party was lost before the request could complete.
---> StreamJsonRpc.ConnectionLostException: The JSON-RPC connection with the remote party was lost before the request could complete.
---> System.OperationCanceledException: The operation was canceled.
at System.Threading.CancellationToken.ThrowOperationCanceledException()
at System.Threading.CancellationToken.ThrowIfCancellationRequested()
at StreamJsonRpc.MessageHandlerBase.WriteAsync(JsonRpcMessage content, CancellationToken cancellationToken)
at StreamJsonRpc.JsonRpc.SendAsync(JsonRpcMessage message, CancellationToken cancellationToken)
at StreamJsonRpc.JsonRpc.InvokeCoreAsync(JsonRpcRequest request, Type expectedResultType, CancellationToken cancellationToken)
--- End of inner exception stack trace ---
at StreamJsonRpc.JsonRpc.InvokeCoreAsync(JsonRpcRequest request, Type expectedResultType, CancellationToken cancellationToken)
at StreamJsonRpc.JsonRpc.InvokeCoreAsync[TResult](RequestId id, String targetName, IReadOnlyList1 arguments, IReadOnlyList1 positionalArgumentDeclaredTypes, IReadOnlyDictionary2 namedArgumentDeclaredTypes, CancellationToken cancellationToken, Boolean isParameterObject) at Flow.Launcher.Core.Plugin.JsonRPCPluginV2.QueryAsync(Query query, CancellationToken token) in C:\projects\flow-launcher\Flow.Launcher.Core\Plugin\JsonRPCPluginV2.cs:line 49 at Flow.Launcher.Core.Plugin.PluginManager.<>c__DisplayClass35_0.<<QueryForPluginAsync>b__0>d.MoveNext() in C:\projects\flow-launcher\Flow.Launcher.Core\Plugin\PluginManager.cs:line 351 --- End of stack trace from previous location --- at Flow.Launcher.Infrastructure.Stopwatch.DebugAsync(String className, String message, Func1 action, String methodName) in C:\projects\flow-launcher\Flow.Launcher.Infrastructure\Stopwatch.cs:line 31
at Flow.Launcher.Core.Plugin.PluginManager.QueryForPluginAsync(PluginPair pair, Query query, CancellationToken token) in C:\projects\flow-launcher\Flow.Launcher.Core\Plugin\PluginManager.cs:line 350
--- End of inner exception stack trace ---
at Flow.Launcher.Core.Plugin.PluginManager.<>c__DisplayClass35_1.b__1(ActionContext ) in C:\projects\flow-launcher\Flow.Launcher.Core\Plugin\PluginManager.cs:line 379
at Flow.Launcher.Plugin.Result.ExecuteAsync(ActionContext context) in //Flow.Launcher.Plugin/Result.cs:line 281
at Flow.Launcher.ViewModel.MainViewModel.OpenResultAsync(String index) in C:\projects\flow-launcher\Flow.Launcher\ViewModel\MainViewModel.cs:line 518
at CommunityToolkit.Mvvm.Input.AsyncRelayCommand.AwaitAndThrowIfFailed(Task executionTask)
at System.Threading.Tasks.Task.<>c.b__128_0(Object state)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)

[cibere]

Can you please tell me what version of flow launcher you are using, and what you did before getting this error message? Also, if there is a file named flogin.log in the plugin's folder, please provide a copy of that

[shyyan85]

Hi, it's ver 2.0.2 portable.
What's happening is pythonw.exe gets non-responsive.
I use a context menu shortcut to kill not responding tasks and pythonw.exe is always shown as one of them.

flogin.log

[cibere]

Hi, it's ver 2.0.2 portable. What's happening is pythonw.exe gets non-responsive. I use a context menu shortcut to kill not responding tasks and pythonw.exe is always shown as one of them.

flogin.log

1. Please delete the file called DELETE-ME-FOR-DEBUG-LOGS.flogin.prod in the plugin's folder, restart flow, replicate whatever caused the error, then send me your flogin.log file again
2. What do you mean by pythonw.exe becomes non-responsive? Does the windows non responsive popup appear? Does the plugin just load forever? Perhaps you could provide a video to show exactly what is happening