Cache.php(92): Warning - Invalid argument supplied for foreach() - Matomo 3.3.0

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… ???

Thank You!

Correction, we upgrade to 3.7.0:

Matomo version: 3.7.0

MySQL version: 5.7.22-log

PHP version: 7.1.9