I just installed wordpress on my site and when I'm trying to install the theme with node's ip as hostname, root username and password. It shows the error I provided in the subject. I've also tried using localhost as the hostname but it's not working. I've done every steps mentioned in the linode documentation on wordpress installation successfully.

chown is also set perfectly as mentioned in the documentation.

Could anyone help me to resolve this?
Thank you.

You may also need to have the domain at the end of your user name. This is pretty common with ftp access on shared hosts. So for example your user name would be user@example.com.

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Using online file storage can prevent data loss if your computer crashes.

so why would that be relevant here?