log missing cur_qbd situation

[pbugni]

the following was recently found on elk:

File "/opt/venvs/portal/lib/python3.9/site-packages/portal/models/qb_status.py", line 102, in _sync_timeline
    if cur_index > 0:
TypeError: '>' not supported between instances of 'NoneType' and 'int'

pencil tracing the code, can't think of a logical explanation for the combination of variables that would cause this. modified code to stop raising exceptions, be more robust and log an error if this happens again with more detail.

[pep8speaks]

Hello @pbugni! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file portal/models/qb_status.py:

Line 99:80: E501 line too long (81 > 79 characters)

Comment last updated at 2024-03-07 03:26:28 UTC

[ivan-c]

thanks!