Error in Register

After submit register form with all correct data, show error message: Inesrt all valid requered fields

Please provide me what data did you try to insert. Maybe we have a small bug, it will help if you provide us how did you come to this error.

The data I try to insert in the form is:
First Name: San
Last Name: Hiscio
Email: [email protected] (this email is working fine)
Password: Pegaso
Confirm Password: Pegaso

I have fixed the problem. Thank you.
Update your code and this will not do anymore problems.