/usr/bin/apport-unpack:ValueError:/usr/bin/apport-unpack@77:extract_keys

[errors.ubuntu.com bug bridge]

Traceback (most recent call last):
  File "/usr/bin/apport-unpack", line 77, in <module>
    pr.extract_keys(f, bin_keys, dir)
  File "/usr/lib/python3/dist-packages/problem_report.py", line 269, in extract_keys
    raise ValueError('%s has no binary content' %
ValueError: ['separator'] has no binary content

The Ubuntu Error Tracker has been receiving reports about a problem regarding apport. This problem was most recently seen with package version 2.20.11-0ubuntu82.1, the problem page at https://errors.ubuntu.com/problem/17fe51b28912baf98bce2ed7ee793073391d73ca contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/.