Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /mysite/web/wp-content/plugins/the-events-calendar/common/vendor/vendor-prefixed/psr/log/Psr/Log/Test/LoggerInterfaceTest.php:21 Stack trace: #0 {main} thrown in /mysite/web/wp-content/plugins/the-events-calendar/common/vendor/vendor-prefixed/psr/log/Psr/Log/Test/LoggerInterfaceTest.php on line 21