MyBB Community Forums

Hi all

I am having a small issue on my forums. Basically, all I'm doing is changing a rank's color in the "Users & Groups" tab in the admin panel.
However, when I go to save this, it comes up with a error message "MyBB has experienced an internal SQL error and cannot continue"
I have attached this error messaged.

Is there anyone that can please help me?

Also, I'm using MyBB version 1.8.19

Please note, my knowledge with html/coding is not the best.

Kind regards,

What are the comments options ? Coming from a plugin ? They are set to '' but need 0 or 1. The trouble is not in mybb but in the plugin.