After I updated ‘groupdocs-Conversion’ for Java from 25.6 to 25.8 Conversion to PDF started to fail for the above file extensions.
For DXF I see the following exception:
com.groupdocs.Conversion.exceptions.CorruptOrDam…...Conversion Product Family java , document-conversion adrian...‘groupdocs-conversion’ for Java from 25.6 to 25.8 conversion to PDF...