We just upgraded from 2.8.0 to 3.7.0.
So far, everything appears to be ok… Still going through the Windows/Apache logs and searching for various entries…
In Matomo’s Administration->Diagnostic->Log Viewer tab, we see the following Message:
“lease report this message in the Matomo forums: https://forum.matomo.org (please do a search first as it might have been reported already) WARNING Piwik\ErrorHandler[2018-04-26 12:24:37 UTC] [c6255] D:\wamp64\www\piwik\core\Cache.php(92): Warning - Invalid argument supplied for foreach() - Matomo 3.3.0”
Doing as requested… Please advise… ???