Fatal error: Uncaught Error: Class "TCPDF2DBarcode" not found in C:\wamp64\www\React_cmms_mrail\8.1\Report\barcodes\example_2d_datamatrix_html.php:46 Stack trace: #0 {main} thrown in C:\wamp64\www\React_cmms_mrail\8.1\Report\barcodes\example_2d_datamatrix_html.php on line 46