Вот такая ошибка при импорте через datashift, без разницы xls или csv
.rvm/gems/ruby-2.4.0/bundler/gems/datashift_spree-acd8deeb0b98/lib/loaders/spree/image_loader.rb:28:in `initialize': uninitialized constant DataShift::SpreeEcom::ImageLoader::ModelMethodsManager (NameError)
.rvm/gems/ruby-2.4.0/bundler/gems/datashift_spree-acd8deeb0b98/lib/thor/spree/products_images.thor:83:in `new'
.rvm/gems/ruby-2.4.0/bundler/gems/datashift_spree-acd8deeb0b98/lib/thor/spree/products_images.thor:83:in `attach_images'
.rvm/gems/ruby-2.4.0/gems/thor-0.19.4/lib/thor/command.rb:27:in `run'
.rvm/gems/ruby-2.4.0/gems/thor-0.19.4/lib/thor/invocation.rb:126:in `invoke_command'
.rvm/gems/ruby-2.4.0/gems/thor-0.19.4/lib/thor.rb:369:in `dispatch'
.rvm/gems/ruby-2.4.0/gems/thor-0.19.4/lib/thor/base.rb:444:in `start'
.rvm/gems/ruby-2.4.0/gems/thor-0.19.4/lib/thor/runner.rb:44:in `method_missing'
..rvm/gems/ruby-2.4.0/gems/thor-0.19.4/lib/thor/command.rb:29:in `run'
.rvm/gems/ruby-2.4.0/gems/thor-0.19.4/lib/thor/command.rb:126:in `run'
.rvm/gems/ruby-2.4.0/gems/thor-0.19.4/lib/thor/invocation.rb:126:in `invoke_command'
.rvm/gems/ruby-2.4.0/gems/thor-0.19.4/lib/thor.rb:369:in `dispatch'
.rvm/gems/ruby-2.4.0/gems/thor-0.19.4/lib/thor/base.rb:444:in `start'
.rvm/gems/ruby-2.4.0/gems/thor-0.19.4/bin/thor:6:in `'
.rvm/gems/ruby-2.4.0/bin/thor:23:in `load'
.rvm/gems/ruby-2.4.0/bin/thor:23:in `'
.rvm/gems/ruby-2.4.0/bin/ruby_executable_hooks:15:in `eval'
.rvm/gems/ruby-2.4.0/bin/ruby_executable_hooks:15:in `'
