We just discovered out email alerts have not been sending, and when checking the test_alert.php we see the following error:

PHP Fatal error:  require_once(): Failed opening required 'Mail/mimePart.php' (include_path='/opt/observium/libs:.:/usr/share/php') in /opt/observium/libs/pear/Mail/mime.php on line 63

Changing line 63 in that file to 'pear/Mail/mimePart.php' fixes the issue and the test alerts works again. 

Has something changed in a recent Observium release that would have broken this include? Anyone else seeing this?

Just upgraded to 17.6.8631 and the issue persists.

Many Thanks,

Tim C