Capybara upload images issue

I need to test file uploads page with Capybara and Selenium.

I wrote this test:

require 'rails_helper'

describe 'Images', type: :feature do
  before(:each) do
    @user = create(:user)
    visit '/users/sign_in'
    fill_in 'sing-in-email-input', with: @user.email
    fill_in 'sign-in-password-input', with: @user.password
    click_button 'btn-sign-in'
    visit '/categories'
    click_on 'btn-new-category'
    expect(current_path) == new_category_path
    fill_in 'category_name', with: 'Test'
    click_button 'btn-create category'
    visit '/categories'
    first('.fa', :visible => false).click
    expect(current_path) == category_path(id: Category.last.slug.to_s)
  end

  it 'should allow a registered user to create image and go to it page', js: true do
    click_on 'btn-upload-images'
    expect(current_path) == new_image_path(id: Category.last.slug.to_s)
    attach_file('image[image]',
                File.join(Rails.root, '/spec/fixtures/solnce-kosmos-merkuriy.jpg'), :visible => false)
    click_on('btn-upload-img')
  end
end

I am not able to continue write this test and check was this image successfully uploaded because on this line:

click_on('btn-upload-img')

I got this error:

Failure/Error: raise ActionController::RoutingError, "No route matches [#{env['REQUEST_METHOD']}] #{env['PATH_INFO'].inspect}"

     ActionController::RoutingError:
       No route matches [GET] "/home/Anton-S/RubymineProjects/rails_projects/gallery/spec/support/uploads/image/image/8790/solnce-kosmos-merkuriy.jpg"
     # /var/lib/gems/2.3.0/gems/railties-5.1.4/lib/rails/rack/logger.rb:36:in `call_app'
     # /var/lib/gems/2.3.0/gems/railties-5.1.4/lib/rails/rack/logger.rb:24:in `block in call'
     # /var/lib/gems/2.3.0/gems/railties-5.1.4/lib/rails/rack/logger.rb:24:in `call'
     # /var/lib/gems/2.3.0/gems/rack-2.0.3/lib/rack/method_override.rb:22:in `call'
     # /var/lib/gems/2.3.0/gems/rack-2.0.3/lib/rack/runtime.rb:22:in `call'
     # /var/lib/gems/2.3.0/gems/rack-2.0.3/lib/rack/sendfile.rb:111:in `call'
     # /var/lib/gems/2.3.0/gems/railties-5.1.4/lib/rails/engine.rb:522:in `call'
     # /var/lib/gems/2.3.0/gems/rack-2.0.3/lib/rack/urlmap.rb:68:in `block in call'
     # /var/lib/gems/2.3.0/gems/rack-2.0.3/lib/rack/urlmap.rb:53:in `each'
     # /var/lib/gems/2.3.0/gems/rack-2.0.3/lib/rack/urlmap.rb:53:in `call'
     # /var/lib/gems/2.3.0/gems/capybara-2.16.1/lib/capybara/server.rb:44:in `call'
     # /var/lib/gems/2.3.0/gems/rack-2.0.3/lib/rack/handler/webrick.rb:86:in `service'
     # ------------------
     # --- Caused by: ---
     # Capybara::CapybaraError:
     #   Your application server raised an error - It has been raised in your test code because Capybara.raise_server_errors == true
     #   /var/lib/gems/2.3.0/gems/capybara-2.16.1/lib/capybara/session.rb:145:in `raise_server_error!'

Finished in 17.15 seconds (files took 2.55 seconds to load)
133 examples, 1 failure

Failed examples:

rspec ./spec/features/images_spec.rb:20 # Images should allow a registered user to create image and go to it page

I have checked that I realy have this file

/spec/fixtures/solnce-kosmos-merkuriy.jpg

on the right place.

Here is my /config/initializers/carrierwave.rb

if Rails.env.test? || Rails.env.cucumber?
  CarrierWave.configure do |config|
    config.storage = :file
    config.enable_processing = false
  end

  # make sure our uploader is auto-loaded
  ImageUploader

  # use different dirs when testing
  CarrierWave::Uploader::Base.descendants.each do |klass|
    next if klass.anonymous?
    klass.class_eval do
      def cache_dir
        "#{Rails.root}/spec/support/uploads/tmp"
      end

      def store_dir
        "#{Rails.root}/spec/support/uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
      end
    end
  end
end

my rails_helper.rb

require 'support/factory_bot'
require 'spec_helper'
require 'shoulda/matchers'
require 'capybara/rspec'
ENV['RAILS_ENV'] ||= 'test'
require File.expand_path('../../config/environment', __FILE__)
abort("The Rails environment is running in production mode!") if Rails.env.production?
require 'rspec/rails'

ActiveRecord::Migration.maintain_test_schema!


module DeviseRequestSpecHelpers

  include Warden::Test::Helpers

  def sign_in(resource_or_scope, resource = nil)
    resource ||= resource_or_scope
    scope = Devise::Mapping.find_scope!(resource_or_scope)
    login_as(resource, scope: scope)
  end

  def sign_out(resource_or_scope)
    scope = Devise::Mapping.find_scope!(resource_or_scope)
    logout(scope)
  end

end

RSpec.configure do |config|
  Capybara.ignore_hidden_elements = false

  config.fixture_path = "#{::Rails.root}/spec/fixtures"

  config.use_transactional_fixtures = true

  config.infer_spec_type_from_file_location!

  config.filter_rails_from_backtrace!
  config.include Devise::Test::ControllerHelpers, type: :controller
  config.include DeviseRequestSpecHelpers, type: :request
end

Shoulda::Matchers.configure do |config|
  config.integrate do |with|
    with.test_framework :rspec

    with.library :rails
  end
end

My spec_helper.rb

RSpec.configure do |config|
  config.expect_with :rspec do |expectations|
    expectations.include_chain_clauses_in_custom_matcher_descriptions = true
  end

  config.mock_with :rspec do |mocks|
    mocks.verify_partial_doubles = true
  end

  config.shared_context_metadata_behavior = :apply_to_host_groups
end

My view template for this images upload page:

.row.main-new-image
  = form_for @image, url: create_image_path, html: {multipart: true, method: :post, remote: true } do |form|
    #new_image_error_explanation
    .field
      .p.text-center
        %span.btn.btn-new-image{id: 'new-image-button'}
          %p#p-new-image-button Choose image
          \#{form.file_field :image, id: 'new-image-id'}
    .field
      = form.hidden_field :user_id, value: current_user.id
    .actions
      .p.text-center
        = form.submit 'Upload', class: 'btn button-upload-img', id: 'btn-upload-img'

All my other Capybara and RSpec tests works fine.

Please help me to understand what is the reason of this issue and how to solve it and prevent in the future.

I can provide more information if it can help to solve this issue.