Fatal error: Uncaught Error: Interface "Doctrine\Migrations\Provider\SchemaDiffProviderInterface" not found in /srv/disk1/2895578/www/whittonphotographicclub.org.uk/concrete/vendor/doctrine/migrations/lib/Doctrine/Migrations/Provider/SchemaDiffProvider.php:21 Stack trace: #0 {main} thrown in /srv/disk1/2895578/www/whittonphotographicclub.org.uk/concrete/vendor/doctrine/migrations/lib/Doctrine/Migrations/Provider/SchemaDiffProvider.php on line 21