XZise added a comment.
When you actually mean traceback https://en.wikipedia.org/wiki/Stack_trace then yeah please post it because that is the most helpful information for bug reports. In fact you always should include it in any bug report (not only with pywikibot but for all software which shows you a traceback/stack trace).
If you just mean the log, well it could be also helpful as I have no idea what could cause that and maybe that would clear things up. It's very hard to fix something when the description of the bug is very vague and it's not a common bug. Just check through the log that it doesn't accidentally contain sensitive information (like passwords).
TASK DETAIL https://phabricator.wikimedia.org/T94688
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To: XZise Cc: jayvdb, XZise, Aklapper, Rubin16, pywikipedia-bugs