Fatal error: Uncaught Symfony\Component\Debug\Exception\ClassNotFoundException: Attempted to load class "Null" from the global namespace. Did you forget a "use" statement for e.g. "Twig_Cache_Null" or "Twig_Node_Expression_Test_Null"? in /var/www/application/vendor/api/api-v2-client/lib/ObjectSerializer.php:317 Stack trace: #0 /var/www/application/vendor/api/api-v2-client/lib/ObjectSerializer.php(334): OpenAPI\Client\ObjectSerializer::deserialize(2001, 'Null', NULL) #1 /var/www/application/vendor/api/api-v2-client/lib/ObjectSerializer.php(267): OpenAPI\Client\ObjectSerializer::deserialize(Object(stdClass), '\\OpenAPI\\Client...', NULL) #2 /var/www/application/vendor/api/api-v2-client/lib/ObjectSerializer.php(334): OpenAPI\Client\ObjectSerializer::deserialize(Array, '\\OpenAPI\\Client...', NULL) #3 /var/www/application/vendor/api/api-v2-client/lib/ObjectSerializer.php(267): OpenAPI\Client\ObjectSerializer::deserialize(Object(stdClass), '\\OpenAPI\\Client...', NULL) #4 /var/www/application/vendor/api/api-v2-client/lib/Objec in /var/www/application/vendor/api/api-v2-client/lib/ObjectSerializer.php on line 317