CLI run of reports hangs forever, and log shows "no attribute username" error

[eric-eisenhart]

Deployment Type

Self-hosted

NetBox Version

v3.7.1

Python Version

3.11

Steps to Reproduce

1. Add any report to Netbox. This one is "CruftCustomFields.py", but I can reproduce with any report.
2. Run via web UI.
3. Run via CLI with /opt/netbox/venv/bin/python3 /opt/netbox/netbox/manage.py runreport --verbosity 3 CruftCustomFields.py

Expected Behavior

If running it via the web UI works, then running it via the CLI would also work.

Also, if running via CLI fails, exit with error instead of hanging.

Alternately, if report requires a username, some way for manage.py runreport to specify the username to run it as.

Observed Behavior

Report works fine via web UI.

Via CLI, output is

[18:32:11] Running CruftCustomFields.CruftCustomFields..

and just sits there until interrupted.

netbox.log shows

2024-01-22 10:32:11,620 INFO default: extras.reports.run_report(job=<Job: da94b31a-7d7d-4258-8965-9047af161546>) (da94b31a-7d7d-4258-8965-9047af161546)
2024-01-22 10:32:11,653 ERROR [Job da94b31a-7d7d-4258-8965-9047af161546]: exception raised while executing (extras.reports.run_report)
Traceback (most recent call last):
  File "/opt/netbox/venv/lib/python3.11/site-packages/rq/worker.py", line 1428, in perform_job
    rv = job.perform()
         ^^^^^^^^^^^^^
  File "/opt/netbox/venv/lib/python3.11/site-packages/rq/job.py", line 1278, in perform
    self._result = self._execute()
                   ^^^^^^^^^^^^^^^
  File "/opt/netbox/venv/lib/python3.11/site-packages/rq/job.py", line 1315, in _execute
    result = self.func(*self.args, **self.kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/netbox/netbox/extras/reports.py", line 36, in run_report
    job.start()
  File "/opt/netbox/netbox/core/models/jobs.py", line 176, in start
    job_start.send(self)
  File "/opt/netbox/venv/lib/python3.11/site-packages/django/dispatch/dispatcher.py", line 176, in send
    return [
           ^
  File "/opt/netbox/venv/lib/python3.11/site-packages/django/dispatch/dispatcher.py", line 177, in <listcomp>
    (receiver, receiver(signal=self, sender=sender, **named))
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/netbox/netbox/extras/signals.py", line 254, in process_job_start_event_rules
    process_event_rules(event_rules, sender.object_type.model, EVENT_JOB_START, sender.data, sender.user.username)
                                                                                             ^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'username'