Produkt: Luxe Contao

Beim Update von 4.13.58 auf 5.3.* bekomme ich folgende Fehlermeldung. Mir scheint, es hat etwas mit dem Template »rsce_luxe_boxes_config.php« zu tun. Was muss da getan werden? Vielen Dank für eure Hilfe.

[2025-12-17T13:42:03.481761+01:00] request.INFO: Matched route "contao_backend". {"route":"contao_backend","route_parameters":{"_route":"contao_backend","_scope":"backend","_controller":"Contao\\CoreBundle\\Controller\\BackendController::mainAction"},"request_uri":"https://test.dresdner-gewerbehof.de/contao","method":"GET"} {"request_uri":"https://test.dresdner-gewerbehof.de/contao","request_method":"GET"}

[2025-12-17T13:42:03.550169+01:00] request.CRITICAL: Uncaught PHP Exception Error: "Class "System" not found" at rsce_luxe_boxes_config.php line 49 {"exception":"[object] (Error(code: 0): Class \"System\" not found at /var/www/web23953849/html/contao5/templates/luxe/rsce_luxe_boxes_config.php:49)"} {"request_uri":"https://test.dresdner-gewerbehof.de/contao","request_method":"GET"}

[2025-12-17T13:42:03.635720+01:00] contao.cron.INFO: Purged the expired double opt-in tokens [] {"contao":{"Contao\\CoreBundle\\Monolog\\ContaoContext":"{\"func\":\"Contao\\\\CoreBundle\\\\Cron\\\\PurgeOptInTokensCron::__invoke\",\"action\":\"CRON\",\"username\":\"N\\/A\",\"browser\":\"N\\/A\",\"uri\":null,\"pageId\":null}"},"request_uri":"https://test.dresdner-gewerbehof.de/contao","request_method":"GET"}

[2025-12-17T13:42:03.640442+01:00] contao.cron.INFO: Purged the temp folder [] {"contao":{"Contao\\CoreBundle\\Monolog\\ContaoContext":"{\"func\":\"Contao\\\\CoreBundle\\\\Cron\\\\PurgeTempFolderCron::__invoke\",\"action\":\"CRON\",\"username\":\"N\\/A\",\"browser\":\"N\\/A\",\"uri\":null,\"pageId\":null}"},"request_uri":"https://test.dresdner-gewerbehof.de/contao","request_method":"GET"}

[2025-12-17T13:42:03.694807+01:00] messenger.INFO: Stopping worker. {"transport_names":["contao_prio_high"]} {"request_uri":"https://test.dresdner-gewerbehof.de/contao","request_method":"GET"}

[2025-12-17T13:42:10.433127+01:00] request.INFO: Matched route "contao_backend_login". {"route":"contao_backend_login","route_parameters":{"_route":"contao_backend_login","_scope":"backend","_store_referrer":false,"_controller":"Contao\\CoreBundle\\Controller\\BackendController::loginAction"},"request_uri":"https://test.dresdner-gewerbehof.de/contao/login","method":"GET"} {"request_uri":"https://test.dresdner-gewerbehof.de/contao/login","request_method":"GET"}

[2025-12-17T13:42:10.497590+01:00] request.CRITICAL: Uncaught PHP Exception Error: "Class "System" not found" at rsce_luxe_boxes_config.php line 49 {"exception":"[object] (Error(code: 0): Class \"System\" not found at /var/www/web23953849/html/contao5/templates/luxe/rsce_luxe_boxes_config.php:49)"} {"request_uri":"https://test.dresdner-gewerbehof.de/contao/login","request_method":"GET"}

[2025-12-17T13:42:10.586154+01:00] messenger.INFO: Stopping worker. {"transport_names":["contao_prio_high"]} {"request_uri":"https://test.dresdner-gewerbehof.de/contao/login","request_method":"GET"}