I am trying to convert a PDF file to comply with PDF/A-3 format and attach an XML file to it as well so it complies with ZUGFeRD standard. I am using a program from Ghostscript zugferd.ps but it keeps throwing this error.

I am trying to convert a PDF file to comply with PDF/A-3 format and attach an XML file to it as well so it complies with ZUGFeRD standard. I am using a program from Ghostscript zugferd.ps but it keeps throwing this error.

I am trying to convert a PDF file to comply with PDF/A-3 format and attach an XML file to it as well so it complies with ZUGFeRD standard. I am using a program from Ghostscript zugferd.ps but it keeps throwing this error.

I am trying to convert a PDF file to comply with PDF/A-3 format and attach an XML file to it as well so it complies with ZUGFeRD standard. I am using a program from Ghostscript zugferd.ps but it keeps throwing this error.