Linux 4.19.0-8-amd64 #1 SMP Debian 4.19.98-1 (2020-01-26) x86_64 GNU/Linux
postgresql 11+200+deb10u3 as database backend
installed with git clone, upgrades maked with sudo -u www-data ./install-cli.php
Last revision running in above environment is 19.1.20200130.
Every next try to upgrade ends with no data display (calendar, infolog & other modules).
upgrade_tables&clear_cache®ister_hooks done, as well with php_session_clean, restart apache and useragent_cache_clean.
…but no luck.
No errorlog, only 404 in accesslog for api/js/offline/themes/offline-language-pl.css (but don’t think problem is here, never was before).
Some months ago there was similar problem corrected (as I remember from changelog) with some js code polishing.
Will send more info, but I’am not coder so don’t know what exactly will be helpfull…