Submission getting failed

I am trying to submit a simple solution, but my submissions are failing at the ‘Conv Ai Validation’ stage.
As per the logs, the results are getting computed successfully and its failing post that.
Here’s the stack trace:

 Error Unexpected Error, please contact organizers
Traceback (most recent call last):
  File "run.py", line 3, in <module>
    start_test_client()
  File "/home/aicrowd/client_launcher.py", line 20, in start_test_client
    client.run_agent()
  File "/home/aicrowd/.conda/lib/python3.8/site-packages/aicrowd_gym/clients/base_oracle_client.py", line 193, in run_agent
    raw_response, status, message = self.process_request(
  File "/home/aicrowd/.conda/lib/python3.8/site-packages/aicrowd_gym/clients/base_oracle_client.py", line 99, in process_request
    "data": self.route_agent_request(
  File "/home/aicrowd/.conda/lib/python3.8/site-packages/aicrowd_gym/clients/base_oracle_client.py", line 129, in route_agent_request
    return self.execute(target_attribute, *args, **kwargs)
  File "/home/aicrowd/.conda/lib/python3.8/site-packages/aicrowd_gym/clients/base_oracle_client.py", line 142, in execute
    return method(*args, **kwargs)
  File "/home/aicrowd/aicrowd_wrapper.py", line 21, in raise_aicrowd_error
    raise NameError(msg)
NameError: Unexpected Error, please contact organizers

Could you help me to resolve this issue ?
@dipam