Celluloid requires in fetch.rb but absent from dependencies

[maxmercy]

I am trying to use the gem but have an error regarding celluloid when trying to start sidekiq as you can see in the image:

The celluloid seems to be require in this file:
sidekiq-priority/lib/sidekiq/priority/server/fetch.rb

However I do not understand why it is require?
It seems to be working when removing the line:
https://github.com/socialpandas/sidekiq-priority/blob/master/lib/sidekiq/priority/server/fetch.rb#L1

I wonder if this is still needed?

Thanks for your help.

[shashanj]

This issue is still happening....is there a scope of new release for this gem?