Alignment of the Foot to Ground (Custom IK System) on Custom Character Doesn't Work but Works Perfectly on Mannequin

Development Character & Animation
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Alignment of the foot to ground (Custom IK system) on custom character doesn’t work but works perfectly on Mannequin

I followed this “Foot Placement IK TUTORIAL using Leg IK in Unreal Engine 4 - YouTube” tutorial perfectly and the result looks perfect on the unreal engine mannequin but once I add the exact same mechanic to my custom character, the foot clips a bit though the ground and looks like it points down. I’ve been trying to fix this for the last 3 days and have tried everything to fix it from multiple rigs to painting weights. I assume something is wrong with my character since it has no problem applying the alignment to the ground to the mannequin. I’m using Blender’s Rigify skeleton, I had to remove the extra thigh and shin bones for the legs to bend properly but I still can’t figure out how to align the foot bone.

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I was able to solve the issue, I just replaced the foot bone in blender’s rigify skeleton with my own under the DEF layer.