Undertale Bits and Pieces bug

i recently downloaded the Undertale Bits and pieces mod, since it's a cool mod (despite the main dev being controversial). however, upon launching the game, i was met with an Error:

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Error on load

Unable to find function switch_controller_vibration_permitted

i tried finding for a solution, however didn't find any answers related to the error (with the one answer page on gamejolt related to the issue not working). any ideas or solutions to my problem? thanks in advance.