Thank you for playing! We're glad that you enjoyed it!
We are so confused about your error, that's something that never happened to us in another game. Does the line have collisions? Does it appear and disappear or something like that? Did the game show some other error symptoms? Did you play the jam original version or the fixed version?
I'd like to think that the cause is we worked with an old engine (Game Maker Studio 1.4). We are sorry for the inconveniences and I hope we can upgrade into a new version of the engine or another engine soon (or fix the error in case it's something else haha).