@dmejiasks How can you have the same issue if you’re not using banner assets? 😉
The notification you found clearly states that there is no advert available for that location. This usually means they’re expired or a setting is set so that the advert will not show up at that moment. For example, when they exceed a impression limit or they’re simply not on that group.
If you also see the notification that your banner folder is not readable, then it’s not readable. Separate issue. Setting the correct permissions and ownership for the folder will fix that.