Permissions 0444 for 'aviraj.pem' are too open. code example
Example 1: Permissions 0644 for are too open. It is required that your private key files are NOT accessible by others. This private key will be ignored
chmod 600 ~/.ssh/id_rsaExample 2: it is required that your private key files are not accessible by others
$ sudo chmod 600 /path/to/my/key.pem