Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in C:\xampp\htdocs\fiveplus\vendor\mike42\escpos-php\test\unit\EscposTest.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\fiveplus\vendor\mike42\escpos-php\test\unit\EscposTest.php on line 7