Fix

app.py

@@ -59,7 +59,7 @@ def process_submission(*inputs):
         gr.Info('Submission valid, running local tournament...')
 
         leaderboard_server.prepare_model_for_submission(inputs["submission_file"], metadata)
-    except ValueError as err:
+    except (ValueError, gr.Error) as err:
         gr.Warning(str(err))
         return (
             gr.update(value='Pre-submit model', visible=True, interactive=True),