Fatal error: Uncaught Error: Interface "Inpsyde\Zettle\PhpSdk\DAL\Builder\Category\CategoryCollectionBuilderInterface" not found in /var/www/html1/wp-content/plugins/zettle-pos-integration/modules/zettle-php-sdk/src/DAL/Builder/Category/CategoryCollectionBuilder.php:10 Stack trace: #0 {main} thrown in /var/www/html1/wp-content/plugins/zettle-pos-integration/modules/zettle-php-sdk/src/DAL/Builder/Category/CategoryCollectionBuilder.php on line 10