I am using RubyMine (for the first time) to work on some existing Ruby code, and first thing I see after loading the project is that there is a warning:

The directory_watcher gem is installed (version 1.4.1) but RubyMine cannot see it.
Is this a known issue, or is there something I need to do to remedy this issue?
You should define gems in the
Gemfile, refer to help.