Update app.py

app.py

@@ -339,7 +339,7 @@ def add_certified_user(hf_username, first_name, last_name, pass_percentage):
   if not check.empty:
     print("CHECK", check)
     print("INDEX", check.index[0])
-    history.iloc[check.index[0]['hf_username', 'first_name', 'last_name', 'pass_percentage', 'datetime']] = hf_username, first_name, last_name, pass_percentage, time.time()
+    history.iloc[[check.index[0]],['hf_username', 'first_name', 'last_name', 'pass_percentage', 'datetime']] = hf_username, first_name, last_name, pass_percentage, time.time()
   else:
     new_row = pd.DataFrame({'hf_username': hf_username, 'first_name': first_name, 'last_name': last_name, 'pass_percentage': pass_percentage, 'datetime': time.time()}, index=[0])
     history = pd.concat([new_row, history[:]]).reset_index(drop=True)