Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/apport/report.py", line 227, in _run_hook
    symb['add_info'](report, ui)
  File "/usr/share/apport/general-hooks/ubuntu.py", line 76, in add_info
    apport.hookutils.attach_casper_md5check(report,
  File "/usr/lib/python3/dist-packages/apport/hookutils.py", line 943, in attach_casper_md5check
    mismatches = check['checksum_missmatch']
KeyError: 'checksum_missmatch'