Ruby can't loading the 'sqlite3'

~/my_first_rails_app$ rails generate scaffold car make:string model:string year:integer /home/othmane/.rbenv/versions/2.6.0/lib/ruby/2.6.0/bundler/rubygems_integration.rb:408:in `block (2 levels) in replace_gem': Error loading the 'sqlite3' Active Record adapter. Missing a gem it depends on? can't activate sqlite3 (~> 1.3.6), already activated sqlite3-1.4.0. Make sure all dependencies are added to Gemfile. (LoadError)