After logged in the admin section of my grav sites, I’ve all the time the 412 Precondition Failed errror (a red box each time that I select an option, page or anything) that says:
412 Precondition Failed
Precondition Failed
The precondition on the requests for the url
/admin/notifications.json/task:processNotifications evaluated to false
Additionally a 412 Precondition failed event was encountered while trying to use an Error Document to … and can’t read anymore because do not fit in the screen.
412 Precondition Failed client error response code indicates that access to the target resource has been denied
Maybe some permissions issues or mod_security
Your server may be preventing access on that specific folder , as @dimitrilongo said, it’s defo a permission error. If you have access to your file settings, add permissions through chmod or so. If you can post the type of host you have maybe more people can help from their own experience
Thanks for the hint @RobLui I’m running this version in a shared hosting, but I can work on the permissions. What sort of permissions I should set and in which folder(s)?