I am getting below error when I am running Foreman 1.14 on my machine.
usr/lib/ruby/vendor_ruby/bundler/resolver.rb:354:in `block in verify_gemfile_dependencies_are_found!': Could not find gem 'foreman-tasks (= 0.8.6)' in any of the gem sources listed in your Gemfile or available on this machine. (Bundler::GemNotFound)
You can provide git repo for this gem in Gemfile like: