Having migrated to 2020 from 2017 overall all seems to work well
one particular list page just fails all the time and has the following error
Parse error: syntax error, unexpected ‘}’, expecting end of file in /var/www/vhosts/m81.co.uk/meteor.m81.co.uk/interface/classes/meteor_events_list.php on line 2734
There means the syntax of the page is not correct (e.g. extra “{” or “}” somewhere, possibly due to some code in server events, you better remove your server events in the generated script one by one to find out which one.