I fixed it by creating a dummy /etc/apparmor.d/local/usr.sbin.mysqld file, rather than removing the offending line in /etc/apparmor.d/usr.sbin.mysqld.
I guess it could be a packaging problem, where the local file has been forgotten to be added.
I fixed it by creating a dummy /etc/apparmor. d/local/ usr.sbin. mysqld file, rather than removing the offending line in /etc/apparmor. d/usr.sbin. mysqld.
I guess it could be a packaging problem, where the local file has been forgotten to be added.