The file name must not contain a slash

server.py

@@ -227,7 +227,7 @@ class LeaderboardServer:
                 submission_id: {
                     category: self._dataframe_to_csv(
                         self._get_model_tournament_table(submission_id, category, to_csv=True),
-                        f"Tournament table - {self.submission_id_to_data[submission_id]['metadata']['model_name'][:self.MAX_LENGTH_OF_MODEL_TITLE]} - {category}.csv",
+                        f"Tournament table - {self.submission_id_to_data[submission_id]['metadata']['model_name'][:self.MAX_LENGTH_OF_MODEL_TITLE].replace('/', '_')} - {category}.csv",
                     )
                     for category in sorted(self.TASKS_CATEGORIES)
                 }