Ssh problem

I create my ssh keys by using Git Bash.exe and i copy the ssh
file ,and ssh public keys file from my document and past them in
authorized_keys folder in ssh folder in the config folder

i use deprec and capistrano to depoly my rails application
but when i write " cap deprec:ssh:setup_keys " and then give
the ssh public key (
this message display
" Could not find ssh public
key(s) for user mahmoud

                                      Please create file

containing ssh public keys in:


authorized_keys/ "

how can i solve this problem?