Not enough free disk space

Not enough free disk space 

The upgrade has aborted. The upgrade needs a total of 2535 M free
space on disk '/'. Please free at least an additional 2138 M of disk
space on '/'. Empty your trash and remove temporary packages of
former installations using 'sudo apt-get clean'.

Related

• do-release-upgrade

See also

• Ubuntu, Ubuntu releases, snap, MAAS, PPA, Canonical Livepatch, Ubuntu Advantage, netplan, multipass, Landscape, Subiquity, lsb_release, Ubuntu MATE, Wayland