Fatal error: Could not check compatibility between SebastianBergmann\CodeUnit\CodeUnitCollection::getIterator(): SebastianBergmann\CodeUnit\CodeUnitCollectionIterator and IteratorAggregate::getIterator(): Traversable, because class SebastianBergmann\CodeUnit\CodeUnitCollectionIterator is not available in /home/winnie/public_html/yahya/app-scheduler/vendor/sebastian/code-unit/src/CodeUnitCollection.php on line 51