Fatal error: Uncaught Error: Class 'Swaggertests\SwaggerTestCase' not found in /mnt/volume_lon1_01/backend/admin/vendor/zircote/swagger-php/tests/SerializerTest.php:8 Stack trace: #0 {main} thrown in /mnt/volume_lon1_01/backend/admin/vendor/zircote/swagger-php/tests/SerializerTest.php on line 8