Traceback: TypeError: object of type 'NoneType' has no len()

[huiwangredhat]

Seen in the pod logs internally

[2024-10-20 14:00:54,820] INFO: DEBUG: Issue [oscal-compass/compliance-trestle] Allow OSCAL metadata to be edited through the trestle `author` commands
[2024-10-20 14:00:54,821] ERROR: Failed on <Issue https://github.com/oscal-compass/compliance-trestle/issues/1539 >
[2024-10-20 14:00:55,465] ERROR: Exception on /handle-event [POST]
Traceback (most recent call last):
File "/usr/local/lib/python3.9/site-packages/flask/app.py", line 1473, in wsgi_app
response = self.full_dispatch_request()
File "/usr/local/lib/python3.9/site-packages/flask/app.py", line 882, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/usr/local/lib/python3.9/site-packages/flask/app.py", line 880, in full_dispatch_request
rv = self.dispatch_request()
File "/usr/local/lib/python3.9/site-packages/flask/app.py", line 865, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args) # type: ignore[no-any-return]
File "/usr/local/src/sync2jira/sync-page/event-handler.py", line 36, in handle_event
initialize_issues(config, repo_name=repo_name)
File "/usr/local/lib/python3.9/site-packages/sync2jira/main.py", line 190, in initialize_issues
d_issue.sync_with_jira(issue, config)
File "/usr/local/lib/python3.9/site-packages/sync2jira/downstream_issue.py", line 1160, in sync_with_jira
_update_jira_issue(existing, issue, client)
File "/usr/local/lib/python3.9/site-packages/sync2jira/downstream_issue.py", line 779, in _update_jira_issue
_update_description(existing, issue)
File "/usr/local/lib/python3.9/site-packages/sync2jira/downstream_issue.py", line 1056, in _update_description
log.info(f"DEBUG: Diff: {''.join(diff)}")
File "/usr/lib64/python3.9/difflib.py", line 1138, in unified_diff
for group in SequenceMatcher(None,a,b).get_grouped_opcodes(n):
File "/usr/lib64/python3.9/difflib.py", line 572, in get_grouped_opcodes
codes = self.get_opcodes()
File "/usr/lib64/python3.9/difflib.py", line 525, in get_opcodes
for ai, bj, size in self.get_matching_blocks():
File "/usr/lib64/python3.9/difflib.py", line 442, in get_matching_blocks
la, lb = len(self.a), len(self.b)
TypeError: object of type 'NoneType' has no len()
[2024-10-20 14:00:55,466] INFO: 172.20.226.117 - - [20/Oct/2024 14:00:55] "POST /handle-event HTTP/1.1" 500 -

[huiwangredhat]

The reason is that the unsynced related issues have been linked to other Jira issues.
[2024-10-23 02:30:57,911] INFO: Found existing, matching downstream 'PSCE-403'.