Fatal error: Uncaught Error: Class "JsonMapperTest_SimpleBase" not found in C:\xampp\htdocs\public\vendor\apimatic\jsonmapper\tests\JsonMapperTest\DerivedClass.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\public\vendor\apimatic\jsonmapper\tests\JsonMapperTest\DerivedClass.php on line 7