Getting an Error Access Violation - No RTTI Data when converting TIF, PDF files to PDF-A/2A format

Hi Team,
We are facing an error like ACCESS VIOLATION -no RTTI Data, while converting TIF,HTML,PDF,MHT files to PDF-A/2A format.
First we are converting the different file types to PDF and We are loading the PDF to memory and using below code to convert to pdf-a/2a format.
Pdfdocument.Convert(new memorystream(), pdfFormat.PDF_A_2A, ConvertErrorAction.Delete);

Regards,
ITC User.

@ITCUser

Thanks for contacting support.

Would you please share some sample input file along with complete code snippet, which you are using at your side to convert it into PDF document. We will test the scenario in our environment and address it accordingly.