I haven't traced down precisely which CL is causing this, but it happens consistently for a redacted query.

Probably need to add some simple hardening around this key lookup

gerrit: Unhandled exception:
Traceback (most recent call last):
  File "./gerrit", line 169, in <module>
    DoMain()
  File "./gerrit", line 165, in DoMain
    commandline.ScriptWrapperMain(FindTarget)
  File "/usr/local/google/home/akeshet/chromiumos/chromite/lib/commandline.py", line 912, in ScriptWrapperMain
    ret = target(argv[1:])
  File "/usr/local/google/home/akeshet/chromiumos/chromite/scripts/gerrit.py", line 607, in main
    functor(opts, *opts.args)
  File "/usr/local/google/home/akeshet/chromiumos/chromite/scripts/gerrit.py", line 262, in UserActSearch
    PrintCls(opts, cls)
  File "/usr/local/google/home/akeshet/chromiumos/chromite/scripts/gerrit.py", line 178, in PrintCls
    PrettyPrintCl(opts, cl, lims=lims, show_approvals=show_approvals)
  File "/usr/local/google/home/akeshet/chromiumos/chromite/scripts/gerrit.py", line 136, in PrettyPrintCl
    approvs = GetApprovalSummary(opts, cl)
  File "/usr/local/google/home/akeshet/chromiumos/chromite/scripts/gerrit.py", line 109, in GetApprovalSummary
    if 'approvals' in cls['currentPatchSet']: