Rails 6 upgrade

[vishal-bacancy]

getting action mailer issue while upgrading from rails 5.2 to 6

Bundler could not find compatible versions for gem "actionmailer":
  In Gemfile:
    devise_invitable (~> 2.0) was resolved to 2.0.3, which depends on
      actionmailer (>= 5.0)

    rails (= 6.0.0) was resolved to 6.0.0, which depends on
      actionmailer (= 6.0.0)

getting compatibility issue for action mailer

[scambra]

DeviseInvitable requires actionmailer >= 5.0, 6.0.0 is bigger than 5.0, so it should be allowed, I don't kow why bundler reject it. Have you tried bundle update rails actionmailer?

[vishal-bacancy]

first, I had replaced "rails" gem from "5.2.2" to "6.0.0" in Gemfile which supposed to update and install actionmailer(6.0.0)
but when I did the bundle update rails it gave me the above error.
Then first, I commented out the gems which had such issues and then I updated to rails 6. finally, I uncommented those gems and did the bundle install this is how I updated the rails app for now.