Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/mydemotec/public_html/frun/vendor/btcpayserver/btcpayserver-greenfield-php/tests/WebhookTest.php:10 Stack trace: #0 {main} thrown in /home/mydemotec/public_html/frun/vendor/btcpayserver/btcpayserver-greenfield-php/tests/WebhookTest.php on line 10