justus@justus:~/Ruby/Websites/app$ mina deploy to=staging --trace

<----- Invoke before mina tasks
   >> tasks: deploy, slack:starting
** Invoke deploy
** Invoke slack:starting (first_time)
** Execute slack:starting

Warning: Identity file $HOME/.ssh/xxx-server.pem not accessible: No such file or directory.
       Permission denied (publickey).

 !     Command failed.
       Failed with status 1 (255)