I have been trying for hours to set up my local environment correctly so

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Asked: June 11, 20262026-06-11T15:50:17+00:00 2026-06-11T15:50:17+00:00

I have been trying for hours to set up my local environment correctly so

0

I have been trying for hours to set up my local environment correctly so I could run an app and work on it locally, but it’s just not working…I’ve installed everything that seemed to be required, but for the life of me I just can’t get the rails server to start.

Here’s the code I’m getting back when i try and start the rails server. Any ideas?

localhost:badger user$ rails s

/Users/user/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/pg-0.11.0/lib/pg.rb:4:in `require': cannot load such file -- pg_ext (LoadError)
from /Users/user/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/pg-0.11.0/lib/pg.rb:4:in `<top (required)>'
from /Users/user/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler 1.1.3/lib/bundler/runtime.rb:68:in `require'
from /Users/user/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
from /Users/user/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:66:in `each'
from /Users/user/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:66:in `block in require'
from /Users/user/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:55:in `each'
from /Users/user/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:55:in `require'
from /Users/user/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.3/lib/bundler.rb:119:in `require'
from /Users/user/badger/config/application.rb:7:in `<top (required)>'
from /Users/user/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.0.7/lib/rails/commands.rb:28:in `require'
from /Users/user/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.0.7/lib/rails/commands.rb:28:in `block in <top (required)>'
from /Users/user/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.0.7/lib/rails/commands.rb:27:in `tap'
from /Users/user/.rvm/gems/ruby-1.9.3-p194@rails3tutorial2ndEd/gems/railties-3.0.7/lib/rails/commands.rb:27:in `<top (required)>'
from script/rails:6:in `require' 
from script/rails:6:in `main'

Right now I’m getting this back…

localhost:badger user$ rails s
=> Booting WEBrick
=> Rails 3.0.7 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
Exiting
/Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/connection_adapters/postgresql_adapter.rb:929:in `initialize': FATAL:  password authentication failed for user "edwin" (PGError)

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/connection_adapters/postgresql_adapter.rb:929:in `new'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/connection_adapters/postgresql_adapter.rb:929:in `connect'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/connection_adapters/postgresql_adapter.rb:228:in `initialize'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/connection_adapters/postgresql_adapter.rb:25:in `new'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/connection_adapters/postgresql_adapter.rb:25:in `postgresql_connection'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:229:in `new_connection'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:237:in `checkout_new_connection'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:191:in `block (2 levels) in checkout'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:187:in `loop'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:187:in `block in checkout'

from /Users/user/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:186:in `checkout'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:94:in `connection'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/connection_adapters/abstract/connection_pool.rb:317:in `retrieve_connection'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/connection_adapters/abstract/connection_specification.rb:97:in `retrieve_connection'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/connection_adapters/abstract/connection_specification.rb:89:in `connection'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/associations.rb:1806:in `create_has_and_belongs_to_many_reflection'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/associations.rb:1411:in `has_and_belongs_to_many'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activerecord-3.0.7/lib/active_record/autosave_association.rb:137:in `has_and_belongs_to_many'

from /Users/user/badger/app/models/user.rb:7:in `<class:User>'

from /Users/user/badger/app/models/user.rb:1:in `<top (required)>'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:454:in `load'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:454:in `block in load_file'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:596:in `new_constants_in'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:453:in `load_file'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:340:in `require_or_load'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:491:in `load_missing_constant'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:183:in `block in const_missing'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:181:in `each'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:181:in `const_missing'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/inflector/methods.rb:124:in `block in constantize'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/inflector/methods.rb:123:in `each'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/inflector/methods.rb:123:in `constantize'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:528:in `block in <class:Reference>'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:538:in `yield'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:538:in `default'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:538:in `get'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/devise-1.4.2/lib/devise/mapping.rb:84:in `to'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/devise-1.4.2/lib/devise/rails/routes.rb:180:in `block in devise_for'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/devise-1.4.2/lib/devise/rails/routes.rb:176:in `each'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/devise-1.4.2/lib/devise/rails/routes.rb:176:in `devise_for'

from /Users/user/badger/config/routes.rb:2:in `block in <top (required)>'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.0.7/lib/action_dispatch/routing/route_set.rb:233:in `instance_exec'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.0.7/lib/action_dispatch/routing/route_set.rb:233:in `draw'

from /Users/user/badger/config/routes.rb:1:in `<top (required)>'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:235:in `load'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:235:in `block in load'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:225:in `block in load_dependency'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:596:in `new_constants_in'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:225:in `load_dependency'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:235:in `load'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/application.rb:127:in `block in reload_routes!'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/application.rb:127:in `each'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/application.rb:127:in `reload_routes!'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/application.rb:120:in `block in routes_reloader'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/file_update_checker.rb:32:in `call'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/file_update_checker.rb:32:in `execute_if_updated'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/application/finisher.rb:51:in `block (2 levels) in <module:Finisher>'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/application/finisher.rb:52:in `call'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/application/finisher.rb:52:in `block in <module:Finisher>'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/initializable.rb:25:in `instance_exec'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/initializable.rb:25:in `run'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/initializable.rb:50:in `block in run_initializers'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/initializable.rb:49:in `each'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/initializable.rb:49:in `run_initializers'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/application.rb:134:in `initialize!'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/application.rb:77:in `method_missing'

from /Users/user/badger/config/environment.rb:5:in `<top (required)>'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:239:in `require'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:239:in `block in require'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:225:in `block in load_dependency'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:596:in `new_constants_in'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:225:in `load_dependency'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:239:in `require'

from /Users/user/badger/config.ru:3:in `block in <main>'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.2.5/lib/rack/builder.rb:46:in `instance_eval'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.2.5/lib/rack/builder.rb:46:in `initialize'

from /Users/user/badger/config.ru:1:in `new'

from /Users/user/badger/config.ru:1:in `<main>'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.2.5/lib/rack/builder.rb:35:in `eval'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.2.5/lib/rack/builder.rb:35:in `parse_file'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.2.5/lib/rack/server.rb:162:in `app'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.2.5/lib/rack/server.rb:253:in `wrapped_app'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.2.5/lib/rack/server.rb:204:in `start'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/commands/server.rb:65:in `start'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/commands.rb:30:in `block in <top (required)>'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/commands.rb:27:in `tap'

from /Users/user/.rvm/gems/ruby-1.9.3-p194/gems/railties-3.0.7/lib/rails/commands.rb:27:in `<top (required)>'

from script/rails:6:in `require'

from script/rails:6:in `<main>'

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1 Answer

Editorial Team · Answer 1 · 2026-06-11T15:50:18+00:00

Editorial Team

2026-06-11T15:50:18+00:00Added an answer on June 11, 2026 at 3:50 pm

Open config/database.yml and note the username for your development database connection.

On your terminal type createuser #<the username>, say no to superuser, yes to create db, and no to create roles. (NO, YES, NO).

Then rake db:create and rake db:migrate.

Now rails s.

You should be up and running.

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