Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventSubscriberInterface" not found in /home/fnbrshareacopy/public_html/modules/contrib/collapsiblock/src/EventSubscriber/LayoutBuilderBlockComponentRender.php:14 Stack trace: #0 {main} thrown in /home/fnbrshareacopy/public_html/modules/contrib/collapsiblock/src/EventSubscriber/LayoutBuilderBlockComponentRender.php on line 14