I am new new to developer on rails. i have problem when i try to use command "rails install mysql" it said like this picture. Thanks you, <https://lh5.googleusercontent.com/--X5X957V4L0/U3wCbuzmDkI/AAAAAAAAADo/qPaUsPlISQQ/s1600/error+01.png> -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/5bb02c19-1a52-457e-aba8-931897bd7cd2%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.