Permissions Error?

[ghost]

chronos@peppy:~$ pm2 install pm2-ssh
[PM2] Spawning PM2 daemon
[PM2] PM2 Successfully daemonized
[PM2][Module] Installing module pm2-ssh
[PM2][Module] Processing...
.....The authenticity of host 'github.com (192.30.252.131)' can't be established.
RSA key fingerprint is 16:27:ac:a5:76:28:2d:36:63:1b:56:4d:eb:df:a6:48.
Are you sure you want to continue connecting (yes/no)? .......ye.s.....y.es
.npm ERR! git clone ssh://[email protected]/Unitech/tty.js.git Cloning into bare repository '/home/chronos/.npm/_git-remotes/ssh-git-github.aaakk.us.kg-Unitech-tty-js-git-9211673b'...
npm ERR! git clone ssh://[email protected]/Unitech/tty.js.git Warning: Permanently added 'github.com,192.30.252.131' (RSA) to the list of known hosts.
npm ERR! git clone ssh://[email protected]/Unitech/tty.js.git Permission denied (publickey).
npm ERR! git clone ssh://[email protected]/Unitech/tty.js.git fatal: Could not read from remote repository.
npm ERR! git clone ssh://[email protected]/Unitech/tty.js.git 
npm ERR! git clone ssh://[email protected]/Unitech/tty.js.git Please make sure you have the correct access rights
npm ERR! git clone ssh://[email protected]/Unitech/tty.js.git and the repository exists.
npm ERR! Linux 3.18.7
npm ERR! argv "/home/chronos/.nvm/versions/node/v0.12.0/bin/node" "/home/chronos/.nvm/versions/node/v0.12.0/bin/npm" "install" "pm2-ssh" "--prefix" "/home/chronos/.pm2"
npm ERR! node v0.12.0
npm ERR! npm  v2.5.1
npm ERR! code 128

npm ERR! Command failed: git clone --template=/home/chronos/.npm/_git-remotes/_templates --mirror ssh://[email protected]/Unitech/tty.js.git /home/chronos/.npm/_git-remotes/ssh-git-github.aaakk.us.kg-Unitech-tty-js-git-9211673b
npm ERR! Cloning into bare repository '/home/chronos/.npm/_git-remotes/ssh-git-github.aaakk.us.kg-Unitech-tty-js-git-9211673b'...
npm ERR! Warning: Permanently added 'github.com,192.30.252.131' (RSA) to the list of known hosts.
npm ERR! Permission denied (publickey).
npm ERR! fatal: Could not read from remote repository.
npm ERR! 
npm ERR! Please make sure you have the correct access rights
npm ERR! and the repository exists.
npm ERR! 
npm ERR! 
npm ERR! If you need help, you may report this error at:
npm ERR!     <http://github.com/npm/npm/issues>

npm ERR! Please include the following file with any support request:
npm ERR!     /home/chronos/npm-debug.log
[PM2][Module][ERROR] Unknown module
┌──────────┬────┬──────┬─────┬────────┬─────────┬────────┬────────┬──────────┐
│ App name │ id │ mode │ pid │ status │ restart │ uptime │ memory │ watching │
└──────────┴────┴──────┴─────┴────────┴─────────┴────────┴────────┴──────────┘
 Use `pm2 show <id|name>` to get more details about an app