Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in I:\www\pvcDi\vendor\php-extended\polyfill-str-levenshtein\tests\StrLevenshteinTest.php:24 Stack trace: #0 {main} thrown in I:\www\pvcDi\vendor\php-extended\polyfill-str-levenshtein\tests\StrLevenshteinTest.php on line 24