Unable to make the plugin work, it crashes before getting any result

[agsoto]

Description

The RecentProjectsOpen plugin fails when queried/executed and Flow Launcher surfaces a FlowPluginException.

The exception appears to be triggered because the plugin writes a Python warning to stdout/stderr:

UserWarning: Using slow pure-python SequenceMatcher. Install python-Levenshtein to remove this warning

Flow Launcher appears to interpret this warning output as invalid JSON-RPC data and throws an exception instead of handling the warning gracefully.

Reproduction Steps

1. Install Flow Launcher 2.1.3.
2. Install the RecentProjectsOpen plugin 1.3.0.
3. Ensure Python 3.9 is installed and configured.
4. Launch Flow Launcher.
5. Trigger the RecentProjectsOpen plugin (search for a recent project or execute a plugin query).
6. Observe the plugin failure and exception dialog/log entry.

Expected Behavior

The plugin should return results normally or prompt for settings, even if Python emits warnings.

Alternatively, warnings should be redirected to stderr or ignored so they do not interfere with JSON-RPC communication between the plugin and Flow Launcher.

Actual Behavior

The plugin crashes and Flow Launcher reports:

Flow.Launcher.Core.ExternalPlugins.FlowPluginException

Environment

• Flow Launcher: 2.1.3
• RecentProjectsOpen: 1.3.0
• Windows Build: 26200.8655
• Python: 3.9 (C:\Python39\python.exe)
• Architecture: x64

Logs

Flow Launcher version: 2.1.3
OS Version: 26200.8655
IntPtr Length: 8
x64: True

Python Path: C:\Python39\python.exe
Node Path: 

Date: 06/13/2026 21:15:12
Exception:
RecentProjectsOpen Exception: 
Websites: https://github.com/Attack825/RecentProjectsOpen
Author: Attack825
Version: 1.3.0
Flow.Launcher.Core.ExternalPlugins.FlowPluginException: C:\Users\Anyone\AppData\Roaming\FlowLauncher\Plugins\RecentProjectsOpen-1.3.0\lib\fuzzywuzzy\fuzz.py:11: UserWarning: Using slow pure-python SequenceMatcher. Install python-Levenshtein to remove this warning
  warnings.warn('Using slow pure-python SequenceMatcher. Install python-Levenshtein to remove this warning')

 ---> System.IO.InvalidDataException: C:\Users\Anyone\AppData\Roaming\FlowLauncher\Plugins\RecentProjectsOpen-1.3.0\lib\fuzzywuzzy\fuzz.py:11: UserWarning: Using slow pure-python SequenceMatcher. Install python-Levenshtein to remove this warning
  warnings.warn('Using slow pure-python SequenceMatcher. Install python-Levenshtein to remove this warning')

   at Flow.Launcher.Core.Plugin.JsonRPCPlugin.ExecuteAsync(ProcessStartInfo startInfo, CancellationToken token) in C:\projects\flow-launcher\Flow.Launcher.Core\Plugin\JsonRPCPlugin.cs:line 220
   at Flow.Launcher.Core.Plugin.JsonRPCPlugin.ExecuteAsync(ProcessStartInfo startInfo, CancellationToken token) in C:\projects\flow-launcher\Flow.Launcher.Core\Plugin\JsonRPCPlugin.cs:line 225
   at Flow.Launcher.Core.Plugin.JsonRPCPlugin.QueryAsync(Query query, CancellationToken token) in C:\projects\flow-launcher\Flow.Launcher.Core\Plugin\JsonRPCPlugin.cs:line 238
   at Flow.Launcher.Core.Plugin.PluginManager.<>c__DisplayClass32_0.<<QueryForPluginAsync>b__1>d.MoveNext() in C:\projects\flow-launcher\Flow.Launcher.Core\Plugin\PluginManager.cs:line 423
--- End of stack trace from previous location ---
   at Flow.Launcher.Infrastructure.Stopwatch.DebugAsync(String className, String message, Func`1 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 422
   --- End of inner exception stack trace ---
   at Flow.Launcher.Core.Plugin.PluginManager.<>c__DisplayClass32_1.<QueryForPluginAsync>b__2(ActionContext _) in C:\projects\flow-launcher\Flow.Launcher.Core\Plugin\PluginManager.cs:line 452
   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 520
   at CommunityToolkit.Mvvm.Input.AsyncRelayCommand.AwaitAndThrowIfFailed(Task executionTask)
   at System.Threading.Tasks.Task.<>c.<ThrowAsync>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)

Flow.Launcher.2026-06-13.log