My skript is stopping console output

[Fanolcie]

Hey, i wrote a script like this

on teleport:
    if player is in world "world":
        if "%new world%" contains "_the_end":
            set {_loc} to location at 100.5, 60, 0.5 in world "world_the_end"
            set {_loc}'s pitch to 1
            set {_loc}'s yaw to 90
            teleport player to {_loc}
            cancel event

and after going to the end, my java console output is stopping. What's wrong with it?