when cleaning old jobs, console log several Error: job "xyz" doesnt exist

Hi,

I've created the following code to cleanup old jobs, but when I run it, kue logs throws many errors on console:
[Error: job "9940" doesnt exist]
[Error: job "9940" doesnt exist]
[Error: job "9940" doesnt exist]
[Error: job "9940" doesnt exist]
[Error: job "9940" doesnt exist]

I'm missing something?
Follows the gist for the cleanup code:
https://gist.github.com/thomasmodeneis/72a24fa57c960baa460c

Also on the webui few jobs still there as zombies, they dont actually exist but the counter on the left side still has few minor values like 1 sometimes 2,3.

I'm using "kue":"0.8.8"

Start with the cleanup code in the linked gist and reproduce the behavior on Kue 0.8.8, then trace the cleanup and WebUI job-count paths. Done means cleanup no longer logs errors for missing jobs and the WebUI no longer shows zombie jobs or incorrect residual counts.

Written by the indexing model from the issue text.