Could not find gem

Question

I migrated from rail 4 to rails 5 but these gems are not working. Can anyone tell me how to solve it? When I do bundle install and check which gems are installed it says it has such gems. I'm using:

• ruby 2.5
• bundler: 2.3.25
• rails 5.2

gemfile: source 'http://insecure.rails-assets.org' do   
  gem 'rails-assets-bootstrap', '~> 3.3.6'   
  gem 'rails-assets-bootstrap-select', '~> 1.6.3'   
  gem 'rails-assets-angular', '~> 1.6.1'   
  gem 'rails-assets-angular-simple-logger', '~> 0.1.7'   
  gem 'rails-assets-ui-leaflet', '~> 2.0.0'   
  gem 'rails-assets-underscore', '~> 1.8.3'   
  gem 'rails-assets-highcharts', '~> 6.1.2'   
  gem 'rails-assets-highcharts-ng', '~> 1.2.1'   
  gem 'rails-assets-leaflet-draw', '~> 1.0.2'   
  gem 'rails-assets-esri-leaflet', '~> 1.0.5'   
  gem 'rails-assets-jquery.easing', '~> 1.3.1' 
end

error:

block in verify_gemfile_dependencies_are_found!': Could not find gem 'rails-assets-bootstrap (\~\> 3.3.6)' in locally installed gems. (Bundler::GemNotFound)

I removed them from the gemfile and it stops giving this error, but as I am migrating an application I need them