this lines of code (114ff) in threw an error, when the validity_end date was empty:
if options.get("validity_end") > arrow.utcnow().shift(years=2):
raise Exception(
"Verisign issued certificates cannot exceed two years in validity"
)
Actually, they are not needed, because immidiately following is a check for an empty validity_end and for the length of the entered period.
When I commented it out for testing, the error was gone and everything worked as expected.