Failed to save key "{key}" of type Webfactory\Bundle\PolyglotBundle\Doctrine\TranslatableClassMetadata: Cache key "..." has non-serializable Webfactory\Bundle\PolyglotBundle\Doctrine\TranslatableClassMetadata value.
... that occur when the Cache Driver used (in Doctrine) is the file-based implementation from symfony/cache.
This addresses warnings like
... that occur when the Cache Driver used (in Doctrine) is the file-based implementation from
symfony/cache
.