Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in C:\xampp\htdocs\site\wp-content\plugins\blockart-blocks\vendor\halaxa\json-machine\test\JsonMachineTest\StringChunksTest.php:12 Stack trace: #0 {main} thrown in C:\xampp\htdocs\site\wp-content\plugins\blockart-blocks\vendor\halaxa\json-machine\test\JsonMachineTest\StringChunksTest.php on line 12