Jan 2 2021
I reverted the database and ran populateContentTables.php before the main update and that fixed the problem.
Dec 31 2020
Hello. I'm getting this error after a trial upgrade from 1.34.1 to 1.35.1, not during upgrade but when accessing some but not all pages. Previously I patched us to 1.33.2 from 1.33.1. We were on an earlier version before that, so various migration flags were set along the way. Am running in a docker container which is on PHP 7.3.25. A separate container is running MySQL 5.7.32.