Hello @tropicalista
Our developers have confirmed that this error is related to a resource we are trying to preload for faster loading of the player. Unfortunately, this resource is not being fetched as it is currently unavailable and cannot be preloaded.
However, please rest assured that this will not affect the functionality in any way and is not a major concern. Our team is actively working on fixing it, and we appreciate your patience in the meantime.
Unfortunately, we do not have any ETA at the moment. Please keep an eye on the changelog for Fixes and Improvements – https://prestoplayer.com/whats-new/
I hope the information will help. Feel free to get back to us if you have any other queries.
