Hi, I don't see the error in the joomla default media manager. It only happens when I try to upload or delete an image from the sp page builder media manager.
It's strange but I have created 2 new instances, one a copy were I have deleted al other components and plugins and reinstalled the template and still same issue.
https://rugbyfuencarral.com/test/ (Same user and password)
And a new fress joomla install with page builder and same template and in this new instance doesn't happen (so it's not a mod_security issue)
See login details bellow for this new instance
What