sshfs "Connection reset by peer" with identify file

There can be many mistakes in syntax, and many more in connection.

Best solution is turn on verbose mode with switch

-o debug

and in my case I see problem with "absolute path to identity file"

no such identity: {{identity_file}}: No such file or directory
Permission denied (publickey).
read: Connection reset by peer

so my full command looks like this

sshfs {{user_name}}@{{server_ip}}:/ /mnt/{{server_ip}} -o "IdentityFile={{absolute_path}},port={{port_number}}" -o debug