--- a/core/modules/simpletest/src/KernelTestBase.php +++ b/core/modules/simpletest/src/KernelTestBase.php @@ -252,6 +252,7 @@ public function containerBuild(ContainerBuilder $container) { $this->container->setParameter('language.default_values', Language::$defaultValues); $container->register('lock', 'Drupal\Core\Lock\NullLockBackend'); + $container->register('lock.persistent', 'Drupal\Core\Lock\NullLockBackend'); $container->register('cache_factory', 'Drupal\Core\Cache\MemoryBackendFactory'); $container