Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/app/htdocs/ninja/vendor/google/auth/tests/Credentials/IAMCredentialsTest.php:23
Stack trace:
#0 {main}
thrown in /home/app/htdocs/ninja/vendor/google/auth/tests/Credentials/IAMCredentialsTest.php on line 23