Currently, Minehut is using Luckperms version 4.4.1, while Luckperms has updated all the way to 5.0.78. I think it would be very beneficial to update this plugin in your next plugin update.
My server could really use this update, it allows for a prefix changing system I previously used in group manager to continue working
This is because they allow us to use @p and such as player selectors, instead of the username/uuid only