Fatal error: Uncaught Error: Class "apimatic\jsonmapper\JsonMapper" not found in C:\xampp\htdocs\public\vendor\apimatic\jsonmapper\tests\JsonMapperTest\DependencyInjector.php:2 Stack trace: #0 C:\xampp\htdocs\public\vendor\apimatic\jsonmapper\tests\JsonMapperTest.php(15): require_once() #1 {main} thrown in C:\xampp\htdocs\public\vendor\apimatic\jsonmapper\tests\JsonMapperTest\DependencyInjector.php on line 2