Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in /opt/lampp/htdocs/msjparametermsn/vendor/phpoffice/phpexcel/unitTests/Classes/PHPExcel/Worksheet/CellCollectionTest.php:3 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/msjparametermsn/vendor/phpoffice/phpexcel/unitTests/Classes/PHPExcel/Worksheet/CellCollectionTest.php on line 3