I get this error when creating an output document in the workflow. I am using HTML2PDF report generator. It has been working well for the last few months and we have not made any change in the flow but it has stopped working quickly. But it works well when using TCPDF report generator. Can anyone tell me why this is happening.
Fatal error: Call to a member function findSubtable() on null in /opt/processmaker/gulliver/thirdparty/html2ps_pdf/pdf.fpdf.makefont.php on line 21