Error when submit votst result

[yahooo-m]

Hi, bother u again. When I submit the result to colab, it raised the following error:

WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
Analysis successful, report available as results.json�[0m
Traceback (most recent call last):
File "/home/deploy/opt/latest/proj_thiai_codalab/tmp/codalab/tmpq19_Uk/run/program/evaluate.py", line 201, in
df_submit = df_submit.append({"account": user_name, "tracker_short_name": tracker_name, "num_submitted": 1}, ignore_index=True)
File "/usr/local/lib/python3.10/dist-packages/pandas/core/generic.py", line 6299, in getattr
return object.getattribute(self, name)
AttributeError: 'DataFrame' object has no attribute 'append'. Did you mean: '_append'?