Click first Sign In in login_helper.

spec/support/login_helpers.rb

@@ -33,9 +33,7 @@ module LoginHelpers
     fill_in "user_login", with: user.email
     fill_in "user_password", with: "12345678"
     check 'user_remember_me' if remember
-    page.within '.login-box' do
-      click_button "Sign in"
-    end
+    first('.login-box').click_button('Sign in')
     Thread.current[:current_user] = user
   end