"Thread-ConsumeBidirectionalStream caught unexpected exception 'generator'
object has no attribute 'add_done_callback' and will exit."

"Traceback (most recent call last):

File "/usr/local/lib/python3.8/site-packages/google/api_core/bidi.py", line
644, in _thread_main

self._bidi_rpc.open()

File "/usr/local/lib/python3.8/site-packages/google/api_core/bidi.py", line
294, in open

call._wrapped.add_done_callback(self._on_call_done)

AttributeError: 'generator' object has no attribute 'add_done_callback'"