Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in /home/clmepl5/public_html/web/app/plugins/wp-smushit/vendor/mixpanel/mixpanel-php/test/ConsumerStrategies/CurlConsumerTest.php:3 Stack trace: #0 {main} thrown in /home/clmepl5/public_html/web/app/plugins/wp-smushit/vendor/mixpanel/mixpanel-php/test/ConsumerStrategies/CurlConsumerTest.php on line 3