Update play_helper.py

play_helper.py

@@ -747,10 +747,14 @@ def check_to_start_new_game(game_name, level, user=None, uid=None, sid=None):
 def check_played_game(user, solved_games, solved_games_df, progress=gr.Progress()):
     uid = user['email']
     sid = user.get('sid', None)
-    matches = _files.list(
-        q=f"'{_folder_id}' in parents and mimeType='application/octet-stream' and name contains '{uid}_{sid}_-_'",
-        fields=f"files(name, id, {_cksm_methods_str})",
-    ).execute()
+    if uid and sid:
+        matches = _files.list(
+            q=f"'{_folder_id}' in parents and mimeType='application/octet-stream' and name contains '{uid}_{sid}_-_'",
+            fields=f"files(name, id, {_cksm_methods_str})",
+        ).execute()
+        matches = matches['files']
+    else:
+        matches = []
     matches = matches['files']
     ret = dict()
     for game_name in solved_games.keys():