Chapter 1 p.13 - SSH error permission denied ...

[Vladka-kurgan]

I apologize in advance: it is possible that this was reported - I could not find it
I am getting this:
**vladka@Bidzon:/mnt/c/Users/vladi/vagrant/.vagrant/machines/default/virtualbox$ vagrant provision
==> default: Running provisioner: ansible...
Vagrant gathered an unknown Ansible version:

and falls back on the compatibility mode '1.8'.

Alternatively, the compatibility mode can be specified in your Vagrantfile:
https://www.vagrantup.com/docs/provisioning/ansible_common.html#compatibility_mode

default: Running ansible-playbook...

PLAY [all] *********************************************************************

TASK [Gathering Facts] *********************************************************
fatal: [default]: UNREACHABLE! => {"changed": false, "msg": "Failed to connect to the host via ssh: Warning: Permanently added '[172.19.176.1]:2222' (ED25519) to the list of known hosts.\r\n@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r\n@ WARNING: UNPROTECTED PRIVATE KEY FILE! @\r\n@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\r\nPermissions 0777 for '/mnt/c/Users/vladi/vagrant/.vagrant/machines/default/virtualbox/private_key' are too open.\r\nIt is required that your private key files are NOT accessible by others.\r\nThis private key will be ignored.\r\nLoad key "/mnt/c/Users/vladi/vagrant/.vagrant/machines/default/virtualbox/private_key": bad permissions\r\nvagrant@172.19.176.1: Permission denied (publickey,gssapi-keyex,gssapi-with-mic).", "unreachable": true}

PLAY RECAP *********************************************************************
default : ok=0 changed=0 unreachable=1 failed=0 skipped=0 rescued=0 ignored=0

Ansible failed to complete successfully. Any error output should be
visible above. Please fix these errors and try again.**
I am running the playbook mentioned on page 13
I am not concerned about warning,,, the "bad premission .... " is puzzling me specifically that IP address mentioned - I do not know where that IP is coming from?

Please clarify when you have a few seconds

Regards,

Vlad