Fatal error: Uncaught Mpdf\MpdfException: Invalid size representation "a3" in /home/users/pdf_api_generator/public_html/pdf-api-generator/mpdf-master/src/SizeConverter.php:35
Stack trace:
#0 /home/users/pdf_api_generator/public_html/pdf-api-generator/mpdf-master/src/CssManager.php(848): Mpdf\SizeConverter->convert('a3')
#1 /home/users/pdf_api_generator/public_html/pdf-api-generator/mpdf-master/src/CssManager.php(285): Mpdf\CssManager->fixCSS(Array)
#2 /home/users/pdf_api_generator/public_html/pdf-api-generator/mpdf-master/src/Mpdf.php(14710): Mpdf\CssManager->ReadCSS('<!DOCTYPE html>...')
#3 /home/users/pdf_api_generator/public_html/pdf-api-generator/index.php(19): Mpdf\Mpdf->WriteHTML('<!DOCTYPE html>...')
#4 {main}
thrown in /home/users/pdf_api_generator/public_html/pdf-api-generator/mpdf-master/src/SizeConverter.php on line 35