Set Task to Dummy if task not found

utils.py

@@ -141,12 +141,16 @@ def load_downloaded_runs(time, cols=KEYS):
         'date-based question answering': 'date_qa',
         'question-answering': 'qa',
     }
-    df_all.task = df_all.task.apply(lambda x: task_mapping.get(x, x))
 
     # Runs which do not have a turn field are imputed to be turn zero (single turn)
     df_all.turn.fillna(0, inplace=True)
 
     df_all.sort_values(by=['_timestamp'], inplace=True)
+    # Check if df_all has the task columns
+    if 'task' in df_all.columns:
+        df_all.task = df_all.task.apply(lambda x: task_mapping.get(x, x))
+    else:
+        df_all['task'] = "Task was not found"
 
     return df_all