After updating my Matomo installation using the automatic online process, I first ran into the issue reported in (No entry or class found for 'path.misc.user'), and fixed it by adding line 13 as suggested there. The update proceeded to conclusion. However, now there is an error at the top of my dashboard stating:
“WARNING: /PATHTOINSTALLATION/www/plugins/SitesManager/SitesManager.php(53): Notice - Undefined index: enable_sites_admin - Matomo 3.12.0 - Please report this message in the Matomo forums: https://forum.matomo.org (please do a search first as it might have been reported already) (Module: MultiSites, Action: index, In CLI mode: false)”
where I have replaced the path to my installation with “PATHTOINSTALLATION”. Please help troubleshoot this. If it helps, when the database upgrade prompt came, there was a line on the files having an integrity problem which I missed before I clicked on the continue buttion.