So, I'm trying to access an old MediaWiki to get some information off it. I set it up back in 2013, and it was last upgraded in 2015.
It looks like DH have upgraded some underlying PHP stuff, and now I can't access anything - I get an error
Fatal error: Call to undefined function wfLoadExtensionMessages() in /home//.com/wicked/extensions/DiscussionThreading/DiscussionThreading.php on line 54
Now, I haven't touched web stuff in years, so I'm a bit lost as to what to do... but I need access to the info held within.
Can some kind soul talk me through upgrading the system to the point where I can pull the info off (I'll probably deprecate it after that, anyway)