game.Players.PlayerAdded:connect(function(plr)
plr.CanLoadCharacterAppearance=false
plr.Character.Humanoid.WalkSpeed=(0)
wait(25)
plr.Character.Humanoid.WalkSpeed=(40)
end)
Output:
Workspace.Script:3: attempt to index field 'Character' (a nil value)

1 comment
try adding a :WaitForChild("Character") after the plr on lines 3+5