Fatal error: Uncaught Error: Interface 'Psr\Container\ContainerInterface' not found in /homepages/46/d292492514/htdocs/clickandbuilds/LIVEOnlineEventShop/wp-content/plugins/flexible-coupons/vendor_prefixed/wpdesk/wp-persistence/src/PersistentContainer.php:13 Stack trace: #0 /homepages/46/d292492514/htdocs/clickandbuilds/LIVEOnlineEventShop/wp-content/plugins/all-in-one-seo-pack/vendor/composer/ClassLoader.php(571): include() #1 /homepages/46/d292492514/htdocs/clickandbuilds/LIVEOnlineEventShop/wp-content/plugins/all-in-one-seo-pack/vendor/composer/ClassLoader.php(428): Composer\Autoload\includeFile('/homepages/46/d...') #2 [internal function]: Composer\Autoload\ClassLoader->loadClass('FlexibleCoupons...') #3 /homepages/46/d292492514/htdocs/clickandbuilds/LIVEOnlineEventShop/wp-content/plugins/flexible-coupons/vendor_prefixed/wpdesk/wp-persistence/src/Adapter/WordPress/WordpressOptionsContainer.php(15): spl_autoload_call('FlexibleCoupons...') #4 /homepages/46/d292492514/htdocs/clickandbuilds/LIVEOnlineEventShop/wp-content/ in /homepages/46/d292492514/htdocs/clickandbuilds/LIVEOnlineEventShop/wp-content/plugins/flexible-coupons/vendor_prefixed/wpdesk/wp-persistence/src/PersistentContainer.php on line 13