Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in /home/russvisa/chesafari.com/vendor/mailerlite/mailerlite-api-v2-php-sdk/tests/MlTestCase.php:8 Stack trace: #0 {main} thrown in /home/russvisa/chesafari.com/vendor/mailerlite/mailerlite-api-v2-php-sdk/tests/MlTestCase.php on line 8