Can't save anything in admin

System Information
  • Strapi Version: 4.2.2
  • Operating System: centos 7
  • Database: mysql
  • Node Version: 16.15.1
  • NPM Version: 8.11.0
  • Yarn Version: 1.22.19

I installed Strapi, apparently successfully, but anything I try to save gives me an error

Failed to load resource: the server responded with a status of 403 (Forbidden)

I have it installed on a centos 7 server.

I was even able to create a few content-types, but when I try to make relational fields I get this error.

I thought it would be something related to roles and permissions plugin. Tried to change permissions, but same error. Tried updating my profile, also error.

Ok, I just figured it out.

Mod segurity was on. Had to turn it off.