Fix

server.py

@@ -262,7 +262,7 @@ class LeaderboardServer:
             task: False for task in self.tasks_metadata.keys()
         }
         
-        for competitor_id in self.submission_ids - {submission_id}: # without self
+        for competitor_id in self.submission_ids - {new_submission_id}: # without self
             res = check_significance_send_task(new_model_file, self.submission_id_to_file[competitor_id])
             res_inverse = check_significance_send_task(self.submission_id_to_file[competitor_id], new_model_file)