Fatal error: Uncaught Error: Class "Doctrine\Common\Collections\ArrayCollection" not found in /home/digitalproduct/public_html/projectmanagementsoftware/vendor/simshaun/recurr/src/Recurr/RecurrenceCollection.php:18 Stack trace: #0 {main} thrown in /home/digitalproduct/public_html/projectmanagementsoftware/vendor/simshaun/recurr/src/Recurr/RecurrenceCollection.php on line 18