[Help] Level generation using a ds.grid won't collide with objects properly.

Hello, I'm creating a small project that uses a ds.Grid to make randomly generated levels. However, when my player collides with the grid on the y axis it gets stuck inside the cell it collides with and won't move until it jumps. I used this video as a guide pt.1, pt.2. Thisis the code for the collision checking, let me know if you need anymore info. Thank you for any help!