[Bug] AttributeError 'NoneType' object has no attribute 'usage_metadata'

[luke-han]

Hello,

I got this error from here (v2.0.8)

AttributeError 'NoneType' object has no attribute 'usage_metadata'

It looks like response_chunk can be None

[PragyanTiwari]

I think that the response_chunk attribute, i.e., usage_metadata, isn't set during initialization.

Instead, we need to use a dict-style method to dynamically retrieve the usage_metadata:

usage_metadata = proto.Message.to_dict(response_chunk['usage_metadata'])

I made that update in my forked repo, check for it here

[lkuligin]

@luke-han could you provide a reproducible sample, please?