无法在 Rails 中生成用户 Model

Question

After the MimeMagic dependency fiasco, I'm now unable to generate a model in Rails. I've got the following warning message and stack trace error after trying to generate a User model in rails

rails generate model User email:string 
password_digest:string
Warning: the running version of Bundler (2.2.3) is 
older than the version that created the lockfile 
(2.2.15). We suggest you to upgrade to the version 
that created the lockfile by running `gem install 
bundler:2.2.15`.

However, my Gemfile is updated to 2.2.15 and I've run bundle install again to no avail.

Here is part of the stack trace error after that Warning:

/Users/shmeadyy/Desktop/Projects/scheduled_tweets/vendor/bundle/ruby/3.0.0/gems/msgpack-1.4.2/lib/msgpack.rb:8:in `require': incompatible library version - /Users/shmeadyy/Desktop/Projects/scheduled_tweets/vendor/bundle/ruby/3.0.0/gems/msgpack-1.4.2/lib/msgpack/msgpack.bundle (LoadError)
        from /Users/shmeadyy/Desktop/Projects/scheduled_tweets/vendor/bundle/ruby/3.0.0/gems/msgpack-1.4.2/lib/msgpack.rb:8:in `<top (required)>'
        from /Users/shmeadyy/Desktop/Projects/scheduled_tweets/vendor/bundle/ruby/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/store.rb:4:in `require'
        from /Users/shmeadyy/Desktop/Projects/scheduled_tweets/vendor/bundle/ruby/3.0.0/gems/bootsnap-1.7.2/lib/bootsnap/load_path_cache/store.rb:4:in `block in <top (required)>'

Answer 1

The bundler used to generate Gemfile is the one globally installed in your ruby gems directory.

gem environment

and

gem list

will give you more information about your current ruby and gems installation.

You probably added older version of bundler into gemfile, and using bundle command you've switched to an older version.

You can try to update global version of bundler by running the prompted

gem install bundler:2.2.15

In my opinion you should remove bundler entry from gemfile, as each time you'd use bundle command it will switch back to older version unnecessarily.