When that happens, I believe it means you're lacking the animation files, or something in the .json is not calling the animation file correctly.
Hmm...that is from the Booty Bandit mod, and is also the dori_reverse version, both of which require the mod they're based on in order to function, so you probably need to find either the HPACK mod that has the base "HPACK Laying Restrained" move, or the dori_reverse_animations mod. Also, make sure the folders are formatted correctly and in the correct place. Oh wait, I actually have both of those, just have to figure out how to upload them.
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Hopefully that works. Like, for you and also in general.