I am unable to run .yml file

while running the .yml file i do get following error

fatal: [192.168.124.1]: UNREACHABLE! => {“changed”: false, “msg”: “Failed to connect to the host via ssh: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).\r\n”, “unreachable”: true}

What user is your playbook running as? it looks like it doesn’t have permissions to connect to the host, by ssh keys or otherwise