check location exists if python path is already set

Author: jjw24

Flow.Launcher.Core/Plugin/PluginsLoader.cs

@@ -115,7 +115,7 @@ public static IEnumerable<PluginPair> PythonPlugins(List<PluginMetadata> source,
             if (!source.Any(o => o.Language.ToUpper() == AllowedLanguage.Python))
                 return new List<PluginPair>();
 
-            if (!string.IsNullOrEmpty(settings.PythonDirectory))
+            if (!string.IsNullOrEmpty(settings.PythonDirectory) && FilesFolders.LocationExists(settings.PythonDirectory))
                 return SetPythonPathForPluginPairs(source, Path.Combine(settings.PythonDirectory, PythonExecutable));
 
             var pythonPath = string.Empty;