You might be interested in my experience as had similar issue:
and also my posts in reply to someone else as we both had the issue you are experiencing:
please do not attempt to upgrade from 12.9.2 to 13.4 without following correct upgrade procedures because in 12.10.x there is a postgresql upgrade from postgres 10 to postgres 11. If you try and go direct to 13.4 you will most likely break your installation.