This section describes the error that occurred when bundle install gem in Rails application and how to solve it.
Ruby 2.6.5 Ruby on Rails 6.0.0
Error statement
An error occurred while installing pg (1.2.3), and Bundler cannot
continue.
Make sure that `gem install pg -v '1.2.3' --source 'https://rubygems.org/'`
succeeds before bundling.
When
Could not find gem 'pg (>= 0.18, < 2.0)' in any of the gem sources listed in your Gemfile.
It is an error such as.
It was solved by the following command.
brew install postgres
It seems that I was stuck in postgresQL.
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