askvortsov Your email configuration isn't working, so when the account confirmation email is sent, this error occurs.
askvortsov Anonymous43 the mail driver isn't magic, you need to set up Sendmail or postfix on your server. https://docs.flarum.org/mail.html
Anonymous43 Well, I get that. Just other forum platforms I didn't have to set anything for user registrations. Never set one up before. Thank you for your help. Awesome forum platform!