[2020-09-11 13:06:05] php.CRITICAL: Fatal Error: Maximum execution time of 1200 seconds exceeded {„exception“:"[object] (Symfony\Component\ErrorHandler\Error\FatalError(code: 0): Error: Maximum execution time of 1200 seconds exceeded at /var/www/vhosts/shopware.werbeartikel-discount.com/httpdocs/vendor/shopware/storefront/Framework/Cache/CacheTagCollection.php:27)"}
[2020-09-11 13:11:07] php.CRITICAL: Fatal Error: Maximum execution time of 1200 seconds exceeded {„exception“:"[object] (Symfony\Component\ErrorHandler\Error\FatalError(code: 0): Error: Maximum execution time of 1200 seconds exceeded at /var/www/vhosts/shopware.werbeartikel-discount.com/httpdocs/vendor/symfony/cache/Traits/FilesystemTrait.php:62)"}
[2020-09-11 13:16:32] php.CRITICAL: Fatal Error: Maximum execution time of 1200 seconds exceeded {„exception“:"[object] (Symfony\Component\ErrorHandler\Error\FatalError(code: 0): Error: Maximum execution time of 1200 seconds exceeded at /var/www/vhosts/shopware.werbeartikel-discount.com/httpdocs/vendor/shopware/storefront/Framework/Cache/CacheTagCollection.php:27)"}
[2020-09-11 13:21:25] php.CRITICAL: Fatal Error: Maximum execution time of 1200 seconds exceeded {„exception“:"[object] (Symfony\Component\ErrorHandler\Error\FatalError(code: 0): Error: Maximum execution time of 1200 seconds exceeded at /var/www/vhosts/shopware.werbeartikel-discount.com/httpdocs/vendor/symfony/cache/Traits/FilesystemTrait.php:62)"}
ja daran wird es wohl liegen. Vermutlich ist Dein Cache so groß, dass Deine PHP maximum execution time von 1200 Sekunden nicht ausreicht. Falls Du einen eigenen Server hast, kannst Du diese in den PHP Einstellungen bei Bedarf anpassen.