[Trisquel-users] Re : yahoo mail broke current default claws-mail and evolution but...

[lcerf]

Mixing Trisquel's repository with Debian's is a recipe for problems.  If the  
version in Trisquel 9 is recent enough, it is wiser to adopt that newer  
version of Trisquel, for instance executing in a terminal:
$ sudo sed -i 's/flidas/etiona/' /etc/apt/sources.list && sudo apt update &&  
sudo apt full-upgrade