The Json result for the file list was not escaped correctly. It was seen as a string with some content...

Author: stho32

Source/LocalNetAppChat/LocalNetAppChat.Server/Program.cs

@@ -102,7 +102,7 @@
     if (!result.IsSuccess)
         return Results.BadRequest(result.Error);
 
-    return Results.Ok(JsonSerializer.Serialize(result.Value));
+    return Results.Json(result.Value);
 });
 
 app.MapGet("/download", async (HttpRequest _, string key, string filename) =>