Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\kalimark\vendor\nikic\php-parser\test\PhpParser\LexerTest.php:8 Stack trace: #0 C:\xampp\htdocs\kalimark\vendor\nikic\php-parser\test\PhpParser\Lexer\EmulativeTest.php(8): require_once() #1 {main} thrown in C:\xampp\htdocs\kalimark\vendor\nikic\php-parser\test\PhpParser\LexerTest.php on line 8