perma.cc has short-form URLs:
https://perma.cc/9CRH-WVZ8
It was possible to expand to long-form:
https://perma-archives.org/warc/20161118180310/http://www.vexillology.org/FB-234-WSO-20161117-Final.pdf
However this no longer works, the perma-archive.org domain is no longer operational for retrieving archives. They seem to no longer support it.
IABot shold continue supporting perma.cc in the ability to add them to the database, but it should not try to convert to long-form or do any operations on them.
If this is not possible due to a missing 14-digit date, it should ignore perma.cc links entirely.
Update: Re-open due to still active bugs. In comments.