Fixing Backblaze B2 Backups in Mailinabox v57

"It looks like the newer version of the b2sdk package is installed and currently being used by mailinabox. If you run the command ls -lah /usr/local/lib/mailinabox/env/lib/python3.6/site-packages do you see b2sdk-1.16.0.dist-info directory listed?

If so i’d recommend deleting the b2sdk package files and reinstalling them using the pip3 command.

*stop the mailinabox service: sudo systemctl stop mailinabox
*delete the b2sdk python packages used by mailinabox: sudo rm -rfv /usr/local/lib/mailinabox/env/lib/python3.6/site-packages/b2sdk*
*Install the b2sdk package in mailinabox’s site-packages directory at the required version and upgrade any other packages: sudo pip3 install b2sdk==1.14.1 --target /usr/local/lib/mailinabox/env/lib/python3.6/site-packages --upgrade
*restart the mailinabox service: sudo systemctl restart mailinabox"