Deprecated: Optional parameter $dataType declared before required parameter $pSheet is implicitly treated as a required parameter in E:\www\ypmvc\3.0\mvc\composer\vendor\phpoffice\phpexcel\Classes\PHPExcel\Writer\Excel2007\Chart.php on line 1260

Fatal error: Uncaught Error: Class "PHPExcel_Writer_Excel2007_WriterPart" not found in E:\www\ypmvc\3.0\mvc\composer\vendor\phpoffice\phpexcel\Classes\PHPExcel\Writer\Excel2007\Chart.php:28 Stack trace: #0 {main} thrown in E:\www\ypmvc\3.0\mvc\composer\vendor\phpoffice\phpexcel\Classes\PHPExcel\Writer\Excel2007\Chart.php on line 28