Fatal error: Uncaught Error: Interface "Eluceo\iCal\Property\ValueInterface" not found in C:\Apache24_x64\htdocs\new-vak\vendor\eluceo\ical\src\Property\StringValue.php:14 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\new-vak\vendor\eluceo\ical\src\Property\StringValue.php on line 14