Fix the big bug from Godot Game Engine error

Tank Ball

This is a game full of procedural generate! Infinite random mazes, each level is different and more difficult than the previous level, The complexity of the maze will become more and more. Enhance your ability by defeat enemies to overcome the increasingly difficult random challenges!

Now it will not cause an error anymore, sorry for the error. It will never show an error now. Godot Engine release version has an issue, now I change to debug version, I tested it, it will not cause error now.