Fehlermeldung "Es ist ein Fehler aufgetaucht"

Wenn en Fehler auftaucht ist der nächste nicht weit weg. Nachdem ich nun das Backend wieder erreiche, erhalten ich im Frontend die oben genannte Fehlermeldung nach dem Ausfüllen der Anmeldeseite / Warenkorb, wenn es zur Kasse geht. Plugins sind alle deinstalliert.
Hier im Forum sind nur „Alte“ Einträge teilweise von SW 5, die nicht wirklich weiterhelfen.

Hat jemand eine Idee dazu?

Zudem sagt mir das Fehlerprotokoll folgendes:
[2024-09-06T08:09:02.715421+00:00] app.CRITICAL: Could not clear cache: Cannot find the „redis“ extension nor the „predis/predis“ package.
[2024-09-06T08:09:02.790627+00:00] app.CRITICAL: Could not clear cache: Cannot find the „redis“ extension nor the „predis/predis“ package.
[2024-09-06T08:09:04.579720+00:00] request.ERROR: Uncaught PHP Exception Shopware\Core\Framework\MessageQueue\MessageQueueException: „Another worker is already running for receiver: „async““ at MessageQueueException.php line 39 {„exception“:„[object] (Shopware\Core\Framework\MessageQueue\MessageQueueException(code: 0): Another worker is already running for receiver: "async" at /www/htdocs/w014e9we/shop/vendor/shopware/core/Framework/MessageQueue/MessageQueueException.php:39)“}
[2024-09-06T08:09:15.431041+00:00] request. ERROR: Uncaught PHP Exception Shopware\Core\Framework\MessageQueue\MessageQueueException: „Another worker is already running for receiver: „async““ at MessageQueueException.php line 39 {„exception“:„[object] (Shopware\Core\Framework\MessageQueue\MessageQueueException(code: 0): Another worker is already running for receiver: "async" at /www/htdocs/w014e9we/shop/vendor/shopware/core/Framework/MessageQueue/MessageQueueException.php:39)“}
[2024-09-06T08:09:59.994517+00:00] app.CRITICAL: Could not clear cache: Cannot find the „redis“ extension nor the „predis/predis“ package.
[2024-09-06T08:10:00.072340+00:00] app.CRITICAL: Could not clear cache: Cannot find the „redis“ extension nor the „predis/predis“ package.
[2024-09-06T08:10:05.026699+00:00] request.CRITICAL: Uncaught PHP Exception League\Flysystem\UnableToDeleteDirectory: „Unable to delete directory located at: bundles/swaglanguagepack. Unable to delete file at /www/htdocs/w014e9we/shop/public/bundles/swaglanguagepack/static/flags/gb-nir.svg“ at UnableToDeleteDirectory.php line 27 {„exception“:„[object] (League\Flysystem\UnableToDeleteDirectory(code: 0): Unable to delete directory located at: bundles/swaglanguagepack. Unable to delete file at /www/htdocs/w014e9we/shop/public/bundles/swaglanguagepack/static/flags/gb-nir.svg at /www/htdocs/w014e9we/shop/vendor/league/flysystem/src/UnableToDeleteDirectory.php:27)“}
[2024-09-06T08:10:06.219759+00:00] app.CRITICAL: Could not clear cache: Cannot find the „redis“ extension nor the „predis/predis“ package.
[2024-09-06T08:10:08.030335+00:00] request.ERROR: Uncaught PHP Exception Shopware\Core\Framework\MessageQueue\MessageQueueException: „Another worker is already running for receiver: „async““ at MessageQueueException.php line 39 {„exception“:„[object] (Shopware\Core\Framework\MessageQueue\MessageQueueException(code: 0): Another worker is already running for receiver: "async" at /www/htdocs/w014e9we/shop/vendor/shopware/core/Framework/MessageQueue/MessageQueueException.php:39)“}
[2024-09-06T08:10:18.332176+00:00] request.ERROR: Uncaught PHP Exception Shopware\Core\Framework\MessageQueue\MessageQueueException: „Another worker is already running for receiver: „async““ at MessageQueueException.php line 39 {„exception“:„[object] (Shopware\Core\Framework\MessageQueue\MessageQueueException(code: 0): Another worker is already running for receiver: "async" at /www/htdocs/w014e9we/shop/vendor/shopware/core/Framework/MessageQueue/MessageQueueException.php:39)“}
[2024-09-06T08:16:48.484994+00:00] app.CRITICAL: Could not clear cache: Cannot find the „redis“ extension nor the „predis/predis“ package.

Seit dem Update auf Version 6.6.6.0 erhalten wir auch den Fehler

„app.CRITICAL: Could not clear cache: Cannot find the „redis“ extension nor the „predis/predis“ package.“

Ebenso konnte man nach dem Warenkorb nicht mehr zur Kasse gehen.
Bei Github wurde auch ein Cache Problem gemeldet: