Lower Arm Bends in the Wrong Direction

Hey Guys

I just used the rigifly feature on one of my models, but the arms are bending strangely. The upper arm of the rig works fine, but when I try to blender the lower arm in the same direction, this happens.

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I don’t know what happened, but I know this shouldn’t have happened. one of my other models uses the rigifly feature and the arms work just fine. If anyone could help, that would be great. I’m thinking its the roll, but I am not sure.