Error when trying to dig very deep

[EdgeKing810]

Hello,
When I try to dig downwards, after many blocks, there's the following error and the game crashes:

game: src/world/world.c:191: void world_heightmap_recalculate(struct World *, ivec2s): Assertion `world_in_bounds(self, (ivec3s) {{ p.x, 0, p.y }})' failed.
[1]    1085200 abort (core dumped)  ./bin/game

[rachit7645]

I think that your y value goes below zero, since the bounds check makes sure that neither the x, y and z axis can be negative.