After performing an upgrade we are getting an error when starting up the onapp daemon on the control panel
/usr/lib64/ruby/gems/2.3.0/gems/bundler-1.15.1/lib/bundler/resolver.rb:396:in `block in verify_gemfile_dependencies_are_found!': Could not find gem 'onapp-billing (~> 6.0.1)' in any of the gem sources listed in your Gemfile. (Bundler::GemNotFound)
OnApp 5.x, 6.x
Verify the missing gem is part of the OnApp installation you are running and then install the gem using the yum package manager. A list of gem dependencies can be found on the Updates and Packages page.
The yum command would look like
yum install rubygem-onapp-billing
During the upgrade process a gem package was not properly installed and is required for the proper startup of the onapp daemon. The missing package can vary and is mentioned in the failed startup log. Installing the missing gem package will correct the error.