Hallo Moritz,
ich habe mal den Log, welcher beim Warenkorb Fehler auftritt reinkopiert.
[2020-01-25 12:58:21] request.INFO: Matched route „frontend.account.register.save“. {„route“:„frontend.account.register.save“,„route_parameters“:{„_route“:„frontend.account.register.save“,„_controller“:„Shopware\Storefront\Controller\RegisterController::register“},„request_uri“:„https://www.dein-kompressionsstrumpf.de/account/register",„method“:"POST“}
[2020-01-25 12:58:21] app.DEBUG: #1 Rule detection: Cart >= 0 (Payment) with priority 100
[2020-01-25 12:58:21] app.DEBUG: #2 Rule detection: Cart >= 0 with priority 100
[2020-01-25 12:58:21] app.DEBUG: #3 Rule detection: Customers from USA with priority 100
[2020-01-25 12:58:21] app.DEBUG: #4 Rule detection: Versandkosten frei with priority 5
[2020-01-25 12:58:21] app.DEBUG: #5 Rule detection: Sunday sales with priority 2
[2020-01-25 12:58:21] app.DEBUG: #6 Rule detection: All customers with priority 1
[2020-01-25 12:58:21] app.DEBUG: #7 Rule detection: PayPalPuiAvailabilityRule with priority 1
[2020-01-25 12:58:21] request.CRITICAL: Uncaught PHP Exception Swift_TransportException: „Connection could not be established with host dein-kompressionsstrumpf.de [#0]“ at /var/www/vhosts/dein-kompressionsstrumpf.de/httpdocs/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php line 269 {„exception“:„[object] (Swift_TransportException(code: 0): Connection could not be established with host dein-kompressionsstrumpf.de [#0] at /var/www/vhosts/dein-kompressionsstrumpf.de/httpdocs/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php:269)“}