ruby on rails - Bundler version 1.5.1 is required; you're currently running 1.2.1. Maybe try `gem install bundler -v 1.5.2` -

  bundler Version 1.5.1 is required; You are currently running 1.2.1. Maybe try the gem-installed bundler- v 1.5.2`.  

When I installed bundle -5 1.5.2 that I gem has'm trying to run RoR applications on Aaryues AB, it displays an error as I suggested, but it Does not work for me. ! [Enter image details here] [1]

Please help me solve this problem. Thank you.