# I have problem ....PostgreSQLAdapter::PGconn

**URL:** <https://www.ruby-forum.com/t/i-have-problem-postgresqladapter-pgconn/190892>\
**Category:** Rails\
**Created:** [June 30, 2010, 8:46am UTC](https://www.ruby-forum.com/t/i-have-problem-postgresqladapter-pgconn/190892 "2010-06-30T08:46:24Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![vuonghung12a2](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/ce7236/32.png) [@vuonghung12a2](https://www.ruby-forum.com/u/vuonghung12a2)\
**Post date:** [June 30, 2010, 8:46am UTC](https://www.ruby-forum.com/t/i-have-problem-postgresqladapter-pgconn/190892/1 "2010-06-30T08:46:24Z")

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I have a problem when i am creating a rails project using postgresql…

uninitialized constant  
ActiveRecord::ConnectionAdapters::PostgreSQLAdapter::PGconn

I have already installed gem postgres-pr. but not start…  
I using rails version 2.3.5  
Ruby 1.8.7  
PostgresSQL 1.10.2.  
Please help me thanks.