Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/dennis91/public_html/wp-content/plugins/events-calendar-pro/vendor/rlanvin/php-rrule/tests/RfcParserTest.php:8
Stack trace:
#0 {main}
thrown in /home/dennis91/public_html/wp-content/plugins/events-calendar-pro/vendor/rlanvin/php-rrule/tests/RfcParserTest.php on line 8