I am runnig Odoo 14 on Ubuntu Server, it is throwing the mentioned error in the backend server logs. Some sites suggested to install the missing packages/library html2text.
I have installed that too by running
pip3 install html2text
and verified it by
pip3 show html2text
which shows location of site-packages of python Location:
/home/dell/.local/lib/python3.8/site-packages.
However, the system is still throwing this mentioned error in the logs
ModuleNotFoundError: No module named 'html2text' - - -.