I also saw this after playing for a while in my single player v1.16.3 world. I went into /gamemode spectator and verified that there were no mobs anywhere nearby.
I then closed the game, reopened it, and then I was able to go to sleep with no problems.
HiEv
I also saw this after playing for a while in my single player v1.16.3 world. I went into /gamemode spectator and verified that there were no mobs anywhere nearby.
I then closed the game, reopened it, and then I was able to go to sleep with no problems.