Fatal error: Uncaught Error: Call to undefined function bcadd() in /var/www/Library-Exercises/01-Library/vendor/tecnickcom/tcpdf/tcpdf_barcodes_1d.php:2080
Stack trace:
#0 /var/www/Library-Exercises/01-Library/vendor/tecnickcom/tcpdf/tcpdf_barcodes_1d.php(352): TCPDFBarcode->barcode_imb()
#1 /var/www/Library-Exercises/01-Library/vendor/tecnickcom/tcpdf/tcpdf_barcodes_1d.php(74): TCPDFBarcode->setBarcode()
#2 /var/www/Library-Exercises/01-Library/vendor/tecnickcom/tcpdf/tcpdf.php(15341): TCPDFBarcode->__construct()
#3 /var/www/Library-Exercises/01-Library/vendor/tecnickcom/tcpdf/examples/example_027.php(265): TCPDF->write1DBarcode()
#4 {main}
thrown in /var/www/Library-Exercises/01-Library/vendor/tecnickcom/tcpdf/tcpdf_barcodes_1d.php on line 2080