Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\impresoraLocal\sistema\clases\vendor\mike42\escpos-php\test\unit\NativeEscposImageTest.php:5 Stack trace: #0 {main} thrown in C:\xampp\htdocs\impresoraLocal\sistema\clases\vendor\mike42\escpos-php\test\unit\NativeEscposImageTest.php on line 5