This question already has an answer here:
I made a new world called "Fun With Redstone".
I had a "genius" idea to make a zombie killing mini-game, so I put in the super fast redstone clock
/kill @e[Type=Zombie] and shortly after, realized my blunder.
My world is now stuck in a death loop where every time I respawn I just get killed again.
Can anyone help me to get out of that loop? Maybe there are hidden files or something? I don't wanna reset my whole world, since there are other projects there.