Bundler:HTTPError Could not download gem sidekiq-pro-5.3.0. I am unable to install the sidekiq pro gem for rails due to a permissions error.
$ bundle install
Bundler::HTTPError: Could not download gem from https://gems.contribsys.com/ due to underlying error <bad response Unauthorized 401
(https://gems.contribsys.com/gems/sidekiq-pro-5.3.0.gem)>
There is a FAQ covering how to debug this issue.
https://github.com/mperham/sidekiq/wiki/Commercial-FAQ#how-do-i-debug-a-401-access-denied-error