Fehler nach Upgrade auf 5.3.1

Guten Tag

Nach einem Upgrade von 4.13.37 auf 5.3.1 und PHP 8.3.3 erhalte ich im Frondend beim Seitenaufruf die Standard-Fehlermeldung. In /var/logs/ wird mir Folgendes angezeigt:

Code:

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[2024-03-11T14:23:04.010642+01:00] request.INFO: Matched route "tl_page.3". {"route":"tl_page.3","route_parameters":{"_token_check":true,"_controller":"Contao\\FrontendIndex::renderPage","_scope":"frontend","_locale":"de","_format":"html","_canonical_route":"tl_page.3","parameters":"","pageModel":{"Contao\\PageModel":[]},"_route":"tl_page.3","_route_object":{"Contao\\CoreBundle\\Routing\\Page\\PageRoute":[]}},"request_uri":"https://yyyyyy.xx/los.html","method":"GET"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:04.374390+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:04.374557+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:04.374645+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:04.460522+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:04.460658+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:04.460707+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:04.475289+01:00] request.CRITICAL: Uncaught PHP Exception Error: "Undefined constant "TL_ASSETS_URL"" at moo_mediabox.html5 line 11 {"exception":"[object] (Error(code: 0): Undefined constant \"TL_ASSETS_URL\" at /home/zzzzzz/www/yyyyyy.xx/templates/moo_mediabox.html5:11)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:04.529432+01:00] messenger.INFO: Sending message Contao\CoreBundle\Messenger\Message\SearchIndexMessage with contao_prio_low sender using Contao\CoreBundle\Messenger\Transport\AutoFallbackTransport {"class":"Contao\\CoreBundle\\Messenger\\Message\\SearchIndexMessage","alias":"contao_prio_low","sender":"Contao\\CoreBundle\\Messenger\\Transport\\AutoFallbackTransport"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:04.531734+01:00] messenger.INFO: Received message Contao\CoreBundle\Messenger\Message\SearchIndexMessage {"class":"Contao\\CoreBundle\\Messenger\\Message\\SearchIndexMessage"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:04.535843+01:00] messenger.INFO: Message Contao\CoreBundle\Messenger\Message\SearchIndexMessage handled by Contao\CoreBundle\Messenger\MessageHandler\SearchIndexMessageHandler::__invoke {"class":"Contao\\CoreBundle\\Messenger\\Message\\SearchIndexMessage","handler":"Contao\\CoreBundle\\Messenger\\MessageHandler\\SearchIndexMessageHandler::__invoke"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:05.368996+01:00] request.INFO: Matched route "tl_page.3". {"route":"tl_page.3","route_parameters":{"_token_check":true,"_controller":"Contao\\FrontendIndex::renderPage","_scope":"frontend","_locale":"de","_format":"html","_canonical_route":"tl_page.3","parameters":"","pageModel":{"Contao\\PageModel":[]},"_route":"tl_page.3","_route_object":{"Contao\\CoreBundle\\Routing\\Page\\PageRoute":[]}},"request_uri":"https://yyyyyy.xx/los.html","method":"GET"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:05.577310+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:05.577410+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:05.577453+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:05.629675+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:05.629780+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:05.629824+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:05.636220+01:00] request.CRITICAL: Uncaught PHP Exception Error: "Undefined constant "TL_ASSETS_URL"" at moo_mediabox.html5 line 11 {"exception":"[object] (Error(code: 0): Undefined constant \"TL_ASSETS_URL\" at /home/zzzzzz/www/yyyyyy.xx/templates/moo_mediabox.html5:11)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:05.659087+01:00] messenger.INFO: Sending message Contao\CoreBundle\Messenger\Message\SearchIndexMessage with contao_prio_low sender using Contao\CoreBundle\Messenger\Transport\AutoFallbackTransport {"class":"Contao\\CoreBundle\\Messenger\\Message\\SearchIndexMessage","alias":"contao_prio_low","sender":"Contao\\CoreBundle\\Messenger\\Transport\\AutoFallbackTransport"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:05.660194+01:00] messenger.INFO: Received message Contao\CoreBundle\Messenger\Message\SearchIndexMessage {"class":"Contao\\CoreBundle\\Messenger\\Message\\SearchIndexMessage"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:05.661642+01:00] messenger.INFO: Message Contao\CoreBundle\Messenger\Message\SearchIndexMessage handled by Contao\CoreBundle\Messenger\MessageHandler\SearchIndexMessageHandler::__invoke {"class":"Contao\\CoreBundle\\Messenger\\Message\\SearchIndexMessage","handler":"Contao\\CoreBundle\\Messenger\\MessageHandler\\SearchIndexMessageHandler::__invoke"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:05.641636+01:00] request.INFO: Matched route "tl_page.3". {"route":"tl_page.3","route_parameters":{"_token_check":true,"_controller":"Contao\\FrontendIndex::renderPage","_scope":"frontend","_locale":"de","_format":"html","_canonical_route":"tl_page.3","parameters":"","pageModel":{"Contao\\PageModel":[]},"_route":"tl_page.3","_route_object":{"Contao\\CoreBundle\\Routing\\Page\\PageRoute":[]}},"request_uri":"https://yyyyyy.xx/los.html","method":"GET"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:05.955224+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:05.955329+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:05.955377+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:06.022286+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:06.022443+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:06.022515+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:06.045792+01:00] request.CRITICAL: Uncaught PHP Exception Error: "Undefined constant "TL_ASSETS_URL"" at moo_mediabox.html5 line 11 {"exception":"[object] (Error(code: 0): Undefined constant \"TL_ASSETS_URL\" at /home/zzzzzz/www/yyyyyy.xx/templates/moo_mediabox.html5:11)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:06.129645+01:00] messenger.INFO: Sending message Contao\CoreBundle\Messenger\Message\SearchIndexMessage with contao_prio_low sender using Contao\CoreBundle\Messenger\Transport\AutoFallbackTransport {"class":"Contao\\CoreBundle\\Messenger\\Message\\SearchIndexMessage","alias":"contao_prio_low","sender":"Contao\\CoreBundle\\Messenger\\Transport\\AutoFallbackTransport"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:06.131541+01:00] messenger.INFO: Received message Contao\CoreBundle\Messenger\Message\SearchIndexMessage {"class":"Contao\\CoreBundle\\Messenger\\Message\\SearchIndexMessage"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:06.138500+01:00] messenger.INFO: Message Contao\CoreBundle\Messenger\Message\SearchIndexMessage handled by Contao\CoreBundle\Messenger\MessageHandler\SearchIndexMessageHandler::__invoke {"class":"Contao\\CoreBundle\\Messenger\\Message\\SearchIndexMessage","handler":"Contao\\CoreBundle\\Messenger\\MessageHandler\\SearchIndexMessageHandler::__invoke"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:05.939458+01:00] request.INFO: Matched route "tl_page.3". {"route":"tl_page.3","route_parameters":{"_token_check":true,"_controller":"Contao\\FrontendIndex::renderPage","_scope":"frontend","_locale":"de","_format":"html","_canonical_route":"tl_page.3","parameters":"","pageModel":{"Contao\\PageModel":[]},"_route":"tl_page.3","_route_object":{"Contao\\CoreBundle\\Routing\\Page\\PageRoute":[]}},"request_uri":"https://yyyyyy.xx/los.html","method":"GET"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:06.128525+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:06.128752+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:06.128895+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:06.212456+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:06.212648+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:06.212740+01:00] php.WARNING: Warning: Undefined array key "class" {"exception":"[object] (ErrorException(code: 0): Warning: Undefined array key \"class\" at /home/zzzzzz/www/yyyyyy.xx/vendor/contao/core-bundle/contao/templates/rss/rss_items_only.html5:6)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:06.222800+01:00] request.CRITICAL: Uncaught PHP Exception Error: "Undefined constant "TL_ASSETS_URL"" at moo_mediabox.html5 line 11 {"exception":"[object] (Error(code: 0): Undefined constant \"TL_ASSETS_URL\" at /home/zzzzzz/www/yyyyyy.xx/templates/moo_mediabox.html5:11)"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:06.253027+01:00] messenger.INFO: Sending message Contao\CoreBundle\Messenger\Message\SearchIndexMessage with contao_prio_low sender using Contao\CoreBundle\Messenger\Transport\AutoFallbackTransport {"class":"Contao\\CoreBundle\\Messenger\\Message\\SearchIndexMessage","alias":"contao_prio_low","sender":"Contao\\CoreBundle\\Messenger\\Transport\\AutoFallbackTransport"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:06.254738+01:00] messenger.INFO: Received message Contao\CoreBundle\Messenger\Message\SearchIndexMessage {"class":"Contao\\CoreBundle\\Messenger\\Message\\SearchIndexMessage"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}
[2024-03-11T14:23:06.260430+01:00] messenger.INFO: Message Contao\CoreBundle\Messenger\Message\SearchIndexMessage handled by Contao\CoreBundle\Messenger\MessageHandler\SearchIndexMessageHandler::__invoke {"class":"Contao\\CoreBundle\\Messenger\\Message\\SearchIndexMessage","handler":"Contao\\CoreBundle\\Messenger\\MessageHandler\\SearchIndexMessageHandler::__invoke"} {"request_uri":"https://yyyyyy.xx/los.html","request_method":"GET"}

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Hierbei fällt mir auf, dass häufig "Warning" vorkommt. Aber mindestens ein Fehler ist sicher irgendwo - für mich versteckt - angezeigt. Im Moment weiss ich nicht mal, was für einen präziseren Thementitel ich hier im Forum setzen soll.

Kann mir jemand sagen, in welche Richtung ich für die Problemlösung gehen soll?

Du hast ein Template namens "moo_mediabox" in deinem Seitenlayout ausgewählt und in diesem Template befindet sich Code, der nicht mit Contao 5 kompatibel ist.

Vielen Dank Spooky, ich bin weitergekommen. Ermutigt durch deinen Tipp habe ich die Meldungen noch genauer durchforstet. Das Meiste sagt mir kaum etwas. Aber ich habe noch 2-3 Begriffe gefunden, die mich an irgendeinen Punkt der Installation erinnert haben. Und als ich dort nachgesehen habe, war tatsächlich etwas nicht so, wie es sein sollte. ZB beim «RSS-Feed»-Modul stand im Layout «veraltet». Nach dem Entfernen des Moduls sah die Seite nochmals besser aus.

Bericht eines Senioren.