Deprecated function: Return type of Drupal\Core\Database\StatementWrapper::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in include() (line 10 of /mnt/web521/d1/47/510241947/htdocs/thomaskaemmerling.de/core/lib/Drupal/Core/Database/StatementWrapper.php).
include('/mnt/web521/d1/47/510241947/htdocs/thomaskaemmerling.de/core/lib/Drupal/Core/Database/StatementWrapper.php') (Line: 444)
Composer\Autoload\includeFile('/mnt/web521/d1/47/510241947/htdocs/thomaskaemmerling.de/vendor/composer/../../core/lib/Drupal/Core/Database/StatementWrapper.php') (Line: 322)
Composer\Autoload\ClassLoader->loadClass('Drupal\Core\Database\StatementWrapper') (Line: 557)
Drupal\Core\Database\Connection->prepareStatement('SELECT "cid", "data", "created", "expire", "serialized", "tags", "checksum" FROM "n99r_cache_container" WHERE "cid" IN ( :cids__0 ) ORDER BY "cid"', Array) (Line: 822)
Drupal\Core\Database\Connection->query('SELECT [cid], [data], [created], [expire], [serialized], [tags], [checksum] FROM {cache_container} WHERE [cid] IN ( :cids__0 ) ORDER BY [cid]', Array, Array) (Line: 97)
Drupal\Core\Database\Driver\mysql\Connection->query('SELECT [cid], [data], [created], [expire], [serialized], [tags], [checksum] FROM {cache_container} WHERE [cid] IN ( :cids[] ) ORDER BY [cid]', Array) (Line: 113)
Drupal\Core\Cache\DatabaseBackend->getMultiple(Array, ) (Line: 92)
Drupal\Core\Cache\DatabaseBackend->get('service_container:prod:9.1.4::Linux:a:1:{i:0;s:82:"/mnt/web521/d1/47/510241947/htdocs/thomaskaemmerling.de/sites/default/services.yml";}') (Line: 547)
Drupal\Core\DrupalKernel->getCachedContainerDefinition() (Line: 892)
Drupal\Core\DrupalKernel->initializeContainer() (Line: 471)
Drupal\Core\DrupalKernel->boot() (Line: 705)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
