edit the code to be able using the hermes-3-llama-3.1-405b free version from openrouter cause the error

[AnPassingTeen]

I edit the code to be able using the hermes-3-llama-3.1-405b free version from openrouter but I have the following issue after Starting Experiments:
Unexpected error: litellm.AuthenticationError: AuthenticationError: OpenrouterException - Error code: 401 - {'error': {'message': 'Missing Authentication header or invalid API key', 'code': 401}}
Traceback (most recent call last):
File "/home/clin10/anaconda3/lib/python3.12/site-packages/litellm/llms/openai.py", line 1033, in completion
raise e
File "/home/clin10/anaconda3/lib/python3.12/site-packages/litellm/llms/openai.py", line 951, in completion
self.make_sync_openai_chat_completion_request(
File "/home/clin10/anaconda3/lib/python3.12/site-packages/litellm/llms/openai.py", line 816, in make_sync_openai_chat_completion_request
raise e
File "/home/clin10/anaconda3/lib/python3.12/site-packages/litellm/llms/openai.py", line 811, in make_sync_openai_chat_completion_request
response = openai_client.chat.completions.create(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/clin10/anaconda3/lib/python3.12/site-packages/openai/_utils/_utils.py", line 274, in wrapper
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "/home/clin10/anaconda3/lib/python3.12/site-packages/openai/resources/chat/completions.py", line 668, in create
return self._post(
^^^^^^^^^^^
File "/home/clin10/anaconda3/lib/python3.12/site-packages/openai/_base_client.py", line 1260, in post
return cast(ResponseT, self.request(cast_to, opts, stream=stream, stream_cls=stream_cls))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/clin10/anaconda3/lib/python3.12/site-packages/openai/_base_client.py", line 937, in request
return self._request(
^^^^^^^^^^^^^^
File "/home/clin10/anaconda3/lib/python3.12/site-packages/openai/_base_client.py", line 1041, in _request
raise self._make_status_error_from_response(err.response) from None
openai.AuthenticationError: Error code: 401 - {'error': {'message': 'Missing Authentication header or invalid API key', 'code': 401}}

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/clin10/anaconda3/lib/python3.12/site-packages/litellm/main.py", line 1925, in completion
response = openai_chat_completions.completion(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/clin10/anaconda3/lib/python3.12/site-packages/litellm/llms/openai.py", line 1039, in completion
raise OpenAIError(status_code=e.status_code, message=str(e))
litellm.llms.openai.OpenAIError: Error code: 401 - {'error': {'message': 'Missing Authentication header or invalid API key', 'code': 401}}

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/clin10/anaconda3/lib/python3.12/site-packages/aider/coders/base_coder.py", line 1105, in send_message
yield from self.send(messages, functions=self.functions)
File "/home/clin10/anaconda3/lib/python3.12/site-packages/aider/coders/base_coder.py", line 1377, in send
hash_object, completion = send_completion(
^^^^^^^^^^^^^^^^
File "/home/clin10/anaconda3/lib/python3.12/site-packages/aider/sendchat.py", line 86, in send_completion
res = litellm.completion(**kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/clin10/anaconda3/lib/python3.12/site-packages/litellm/utils.py", line 1078, in wrapper
raise e
File "/home/clin10/anaconda3/lib/python3.12/site-packages/litellm/utils.py", line 966, in wrapper
result = original_function(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/clin10/anaconda3/lib/python3.12/site-packages/litellm/main.py", line 2766, in completion
raise exception_type(
^^^^^^^^^^^^^^^
File "/home/clin10/anaconda3/lib/python3.12/site-packages/litellm/utils.py", line 8438, in exception_type
raise e
File "/home/clin10/anaconda3/lib/python3.12/site-packages/litellm/utils.py", line 8305, in exception_type
raise AuthenticationError(
litellm.exceptions.AuthenticationError: litellm.AuthenticationError: AuthenticationError: OpenrouterException - Error code: 401 - {'error': {'message': 'Missing Authentication header or invalid API key', 'code': 401}}
I checked the api key is correct but just don't know why I'm getting the error