ruby on rails - Heroku client internal error, undefined method `database_session' -


i'm trying pull database heroku remote error message.

! heroku client internal error. ! search at: https://help.heroku.com ! or report bug at: https://github.com/heroku/heroku/issues/new

error:       undefined method `database_session' #<heroku::client:0x007fba0d5a2f20> (nomethoderror) backtrace:   /users/christopheprakash/.heroku/plugins/heroku-taps/lib/taps/heroku/command/db.rb:217:in `taps_client'              /users/christopheprakash/.heroku/plugins/heroku-taps/lib/taps/heroku/command/db.rb:64:in `pull'              /users/christopheprakash/.heroku/client/lib/heroku/command.rb:213:in `run'              /users/christopheprakash/.heroku/client/lib/heroku/cli.rb:28:in `start'              /usr/local/cellar/heroku-toolbelt/2.40.0/libexec/bin/heroku:24:in `<main>'  command:     heroku db:pull sqlite://db/development.sqlite3 plugins:     heroku-taps version:     heroku-toolbelt/3.0.0 (x86_64-darwin12.4.0) ruby/1.9.3

i downloaded toolbelt directly heroku , installed taps plugin via https://github.com/heroku/heroku-taps.git

any idea how fix this?

thanks!

edit: i've tried every variation of command heroku offers , still same error!

change gemfile

group :development, :test   gem 'sqlite3' end group :production   gem 'pg' end

then bundle install, recommit , push heroku again


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