/usr/lib/groff/tmac/tmac.gmse is a link pointing to tmac.mse but
the later file is nowhere to be found. A severity is low unless
you are a Swede. :-)
Older groff packages used to have the same problem also with tmac.gm
and tmac.m. This was corrected but not "tmac.mse" stuff.
Fixed (by including mm/tmac.mse) in groff-1.15-9. FWIW, the tmac.se looks like
it's also broke, diffing aginst tmac.mse indicates a broken ".mso tmac.m".
If that's the case, please reopen this bug, and I'll fix that problem also.