use sanitized username

criteria.py

@@ -36,13 +36,14 @@ def get_user_results(username: str) -> List[Dict]:
         List of user's quiz results
     """
     try:
+        sanitized_username = username.replace("-", "000")
         user_results = load_dataset(
             path=EXAM_DATASET_ID,
             streaming=True,
-            data_files=f"data/{username}-00000-of-00001.parquet",
+            data_files=f"data/{sanitized_username}-00000-of-00001.parquet",
         )
         results = list(user_results["train"])
-        print(f"Found {len(results)} results for user {username}")
+        print(f"Found {len(results)} results for user {sanitized_username}")
         return results
 
     except Exception as e: