Zeyckler

Yes, I have disabled all the plugins and the theme, and the error persists. Only the editors users can login to the dashboard.

Thanks, best regards.

Helo Viktor, thanks for your response.

I have tried in several browsers (Chrome, Firefox and IE) and also in private modes and the error is the same.

I also tried to add a new administrator user, but the error continues.

Thanks again, best regards.