How to make constant night on Minecraft server?

I have minecraft server on Spigot 1.15.2. I want to have always night on one of my worlds.

I tried to do /gamerule doDaylightCycle false, but when someone on the server goes to bed, this don't work and it's create a day.

I can't find any plugin to have constant night on my server. \

Is there any possibility? Or is there a way to block players from sleeping?


You can either shoot them out of bed or just have a repeating command block with /time set night.