rails g modelができない

Question

rails generate model User first_name:string last_name:string email:string
Traceback (most recent call last):
	5: from bin/rails:2:in `<main>'
	4: from bin/rails:2:in `load'
	3: from /Users/user/AMewZ/bin/spring:3:in `<top (required)>'
	2: from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_gem.rb:65:in `gem'
	1: from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/dependency.rb:323:in `to_spec'
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/dependency.rb:313:in `to_specs': Could not find 'bundler' (2.1.4) required by your /Users/user/AMewZ/Gemfile.lock. (Gem::MissingSpecVersionError)
To update to the latest version installed on your system, run `bundle update --bundler`.
To install the missing version, run `gem install bundler:2.1.4`
Checked in 'GEM_PATH=/Users/user/.gem/ruby/2.6.0:/Library/Ruby/Gems/2.6.0:/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/gems/2.6.0', execute `gem env` for more information

このように rails generate model User first_name:string last_name:string email:string を実行しようとするとエラーになります。

bundle update --bundler
gem install bundler:2.1.4
を実行しましたが、エラーが解消されません。

どのように対処したらいいでしょうか？

Answer 1

bundle exec rails ,,,,, とするとどうなりますか