Issue details

I'm seeing the following error in my Formant agent logs:

ERROR    Media encoder: python3    uncaught exception
5月 17 16:06:51 formant-agent[5837]: Traceback (most recent call last):
5月 17 16:06:51 formant-agent[5837]:  File "/usr/lib/formant/agent/media_encoder_main.py", line 16, in <module>
5月 17 16:06:51 formant-agent[5837]:   from media_encoder.media_encoder import ( # noqa: E402
5月 17 16:06:51 formant-agent[5837]:  File "/usr/lib/formant/agent/media_encoder/media_encoder.py", line 6, in <module>
5月 17 16:06:51 formant-agent[5837]:   import grpc
5月 17 16:06:51 formant-agent[5837]:  File "/usr/lib/formant/agent/dist-packages/grpc/__init__.py", line 23, in <module>
5月 17 16:06:51 formant-agent[5837]:   from grpc._cython import cygrpc as _cygrpc
5月 17 16:06:51 formant-agent[5837]: ImportError: cannot import name 'cygrpc' from 'grpc._cython' (/usr/lib/formant/agent/dist-packages/grpc/_cython/__init__.py)

Troubleshooting steps

Codename matching

Check that the codename in cat /etc/os-release matches the codename for the formant entry in cat /etc/apt/sources.list.

• If not, change sources.list to match os-release. Then run the following commands:

sudo apt remove -y formant-agent
sudo apt update
sudo apt install -y formant-agent

Python version

Check that your Python version is the default for your Linux distribution.

• Run the following command:

python3 --version

Default Python versions:

• Bionic: 3.6.9
• Focal: 3.8.10

If your Python version does not match the default for your distribution:

1. Install the default version and add to /var/lib/formant/.bashrc
2. Run: export FORMANT_AGENT_PYTHON3_PATH=<</path/to/correct/python>>
3. Restart your agent.