Problems editing the Masthead section of OJS 3.1

Hi all.

I have this problem in management / settings / context

It is at the time of changing the texts that I had written in the version of OJS v2.

I currently have OJS and when I’m going to make a change and save, it keeps thinking and does not save the new content.

Which may be due?

Guessing it is the same 403 error / mod_security problem like here: Problems saving footers Ojs - #9 by ajnyga