Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\Apache24\htdocs\cms_upgrade\vendor\commerceguys\addressing\tests\UpdateHelperTest.php:11
Stack trace:
#0 {main}
thrown in C:\Apache24\htdocs\cms_upgrade\vendor\commerceguys\addressing\tests\UpdateHelperTest.php on line 11