The current Rails version is far out of date at 5.2.3. Upgrade Rails incrementally per the upgrade guides at https://guides.rubyonrails.org/upgrading_ruby_on_rails.html, and upgrade gems to latest stable versions, while testing thoroughly along the way.
The current Rails version is far out of date at 5.2.3. Upgrade Rails incrementally per the upgrade guides at https://guides.rubyonrails.org/upgrading_ruby_on_rails.html, and upgrade gems to latest stable versions, while testing thoroughly along the way.