Error Forbidden in Omeka Classic

Hello, I´m having this error when I try to add an author in Simplevocab. I thought that would be solved when I upgrade Omeka from 26.6.1 to 3.1.1, but it didn´t work out, and now I also can´t edit Simplepages. Anyone has this problem?

It was an error with Modsecurity using Webuzo as ftpserver.

ModSecurity: Access denied with code 403 (phase 2). Operator GE matched 5 at TX:anomaly_score

ModSecurity Web Application Firewall is enabled with a very restrictive (strict) ruleset such as OWASP, Comodo, or a custom ruleset like Imunify360. Hence, some operations on the websites are blocked.

I looked on Logerrors and that was the issue. I disabled Modsecurity and everything worked out!