PostgreSQL gem pg was unable to install

Question

My DB is PostgreSQL.I am on CENTOS.... While installing the pg gem I received the following error. I reinstalled to clear my YAML problem also, which didn\'t work, but it is jus

Answer 1

Using AWS Cloud 9 Linux:

sudo yum install postgresql-libs

then:

sudo yum install postgresql-devel

then:

gem update --system

if needed, then:

gem install bundler (Bundler 2.0)

then:

bundle install