I’m trying to set up forest admin on my Rails app.
On the step
rails g forest_liana:install abcd
I get the following error message in terminal:
/Users/—/.rvm/gems/ruby-2.6.6/gems/activemodel-6.0.4.1/lib/active_model/validations/validates.rb:121:in `rescue in block in validates’: Unknown validator: ‘URLValidator’ (ArgumentError)
My gemfile
ruby ‘2.6.6’
gem ‘pg’, ‘>= 0.18’, ‘< 2.0’
gem ‘puma’, ‘~> 3.11’
gem ‘rails’, ‘~> 6.0.4’, ‘>= 6.0.4.1’