Package: libreoffice-common Version:4:7.4.7-1+deb12u6 Basically LO can't send emails because apparmor blocks it. This is a total PITA.
I have zero interaction with AA except for this problem which reinstates itself randomly after updates so fixing it each time is a maximal waste of time. I've no real idea which package is responsible but it is this file that causes the pain: usr.lib.libreoffice.program.senddoc and that belongs to libreoffice-common It might be that libreoffice-plasma or libreoffice-kf5 should "fix" it but I don't know. I'm sure this has been reported many times before but the random medley of old bug reports relating to similar problems in very confusing.