Player going through cracks in walls,

Hi, I’m instantiating all of my levels from a text file and my player is able to go between the tiles of my walls. I tried making the colliders bigger but that didn’t work. Here’s a video: https://drive.google.com/open?id=1lSNver9hdCOl9XZkn9X0OwcqPR4AjWwN,Hi, I’m instantiating my levels from a text file and my player is able to walk in between all of the wall tiles. I’ve tried making all of the colliders larger but that doesn’t work.
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Here’s a video https://drive.google.com/open?id=1lSNver9hdCOl9XZkn9X0OwcqPR4AjWwN

I just switched from rigidbody to character controller and it works, but is there a way to stop this still using rigidbody?