Hello,
I am the developer of the plugin BigDoors: https://www.spigotmc.org/resources/big-doors.58669/
I have been getting reports that the plugin is broken on 1.16, as 1.16 support was added in version 0.1.8.19, while Minehut currently appears to be using version 0.1.8.18.
I was hoping you could update to at least 0.1.8.19 (but ideally to 0.1.8.21) so these people can use this plugin again.