Heroku RoR project deployment : An error occurred while installing ruby-1.9.3-p551 -


i trying deploy ruby on rails project ruby-1.9.3-p551 version fails on installing ruby 1.9.3 version giving error below:

 !     error occurred while installing ruby-1.9.3-p551  !       !     heroku recommends use latest supported ruby version listed here:  !     https://devcenter.heroku.com/articles/ruby-support#supported-runtimes  !       !     more information on syntax declaring ruby version see:  !     https://devcenter.heroku.com/articles/ruby-versions

specifically have tell heroku give ubuntu server build cedar-14 & ensure gemfile reflected in gemfile.lock

details on here ... errors in gemfile

this page contains details on need ... https://devcenter.heroku.com/articles/ruby-support#supported-runtimes


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