the midas wiki was updated to the latest LTS point release 1.27.7, the latest (last?) security update.
mediawiki series 1.27 is now officially EOL, see
they recommend that all users upgrade to the current LTS series 1.31.
for us it means moving the wiki from the present el6 (SL6) computer to
a more up-to-date platform (el8 or ubuntu LTS 18.04).