Installtool / Bad Gateway 502 / Interface Doctrine\ORM\Proxy\Proxy does not exist

[conter]

Hallo zusammen,

ich habe bei einer Installation nach Update auf 4.9.29 folgenden Fehler bekommen.

[2022-05-13 13:14:03] request.CRITICAL: Uncaught PHP Exception ReflectionException: "Interface Doctrine\ORM\Proxy\Proxy does not exist" at /var/www/clients/client3/web285/web/v1/vendor/doctrine/persistence/lib/Doctrine/Persistence/AbstractManagerRegistry.php line 170 {"exception":"[object] (ReflectionException(code: 0): Interface Doctrine\\ORM\\Proxy\\Proxy does not exist at /var/www/clients/client3/web285/web/v1/vendor/doctrine/persistence/lib/Doctrine/Persistence/AbstractManagerRegistry.php:170, Error(code: 0): Interface 'Doctrine\\Persistence\\Proxy' not found at /var/www/clients/client3/web285/web/v1/vendor/doctrine/common/lib/Doctrine/Common/Proxy/Proxy.php:14, ReflectionException(code: 0): Interface Doctrine\\ORM\\Proxy\\Proxy does not exist at /var/www/clients/client3/web285/web/v1/vendor/doctrine/persistence/lib/Doctrine/Persistence/AbstractManagerRegistry.php:170, Error(code: 0): Interface 'Doctrine\\Persistence\\Proxy' not found at /var/www/clients/client3/web285/web/v1/vendor/doctrine/common/lib/Doctrine/Common/Proxy/Proxy.php:14)"} []
[2022-05-13 13:14:03] request.CRITICAL: Exception thrown when handling an exception (ReflectionException: Interface Doctrine\ORM\Proxy\Proxy does not exist at /var/www/clients/client3/web285/web/v1/vendor/doctrine/persistence/lib/Doctrine/Persistence/AbstractManagerRegistry.php line 170) {"exception":"[object] (ReflectionException(code: 0): Interface Doctrine\\ORM\\Proxy\\Proxy does not exist at /var/www/clients/client3/web285/web/v1/vendor/doctrine/persistence/lib/Doctrine/Persistence/AbstractManagerRegistry.php:170, Error(code: 0): Interface 'Doctrine\\Persistence\\Proxy' not found at /var/www/clients/client3/web285/web/v1/vendor/doctrine/common/lib/Doctrine/Common/Proxy/Proxy.php:14)"} []

Interface Doctrine\ORM\Proxy\Proxy does not exist gibt bei google keine Treffer in Verbindung mit contao.

Das Update hat aber funktioniert, im Manager sehe ich 4.9.29, Prodcache wurde erneuert, contao und contao/install sind aber nicht erreichbar.

Viele Grüße,
conter