Fatal error: Uncaught Error: Call to undefined function Barn2\Plugin\Document_Library\Tests\isUnitTest() in /www/wwwroot/wczhuti/wp-content/plugins/document-library-lite/tests/Integration/ExampleTest.php:13 Stack trace: #0 {main} thrown in /www/wwwroot/wczhuti/wp-content/plugins/document-library-lite/tests/Integration/ExampleTest.php on line 13