I found the problem!!!
It was due to a projectile that kept going infinitely out of the screen and its Y coord reached a value too high for the Playdate to handle.
I always try to avoid these kind of issues and I have code to handle the elements where they are out of the screen, but in this edge case, the projectile "avoided" my checks and kept going. It was very tricky to catch because one of the conditions for the error to happen was that the projectile was already out of the screen when spawned.
Well. I hope this post helps someone on the future. The error e0 is not only because of infinite loops, but also caused by value over/underrun.