Fatal error: Uncaught Error: Class "Tests\TestCase" not found in C:\mywamp\sites\allsite\New folder\plugins2019-master\plg_coolui\vendor\imangazaliev\didom\tests\DiDom\DocumentTest.php:9 Stack trace: #0 {main} thrown in C:\mywamp\sites\allsite\New folder\plugins2019-master\plg_coolui\vendor\imangazaliev\didom\tests\DiDom\DocumentTest.php on line 9