Fatal error: Uncaught Error: Class "OCP\Encryption\Exceptions\GenericEncryptionException" not found in /home/tremblinlu/MyNextCloud/nextcloud/lib/private/Encryption/Exceptions/EncryptionHeaderKeyExistsException.php:28 Stack trace: #0 {main} thrown in /home/tremblinlu/MyNextCloud/nextcloud/lib/private/Encryption/Exceptions/EncryptionHeaderKeyExistsException.php on line 28