I had the same issue but with a different mod, all it took was updating my mod (specifically Fontaine's Recoil Mod) from the 3.7.0 version to the 3.7.1 version.
Also, take the mod out and see if the game works as normal. If so, put it back in.
If it's not up to date - I would check and make sure. If it is, someone with more technical knowledge is gonna have to help.
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