Installing openvino plugins for audacity

Hi, i’m trying to install the openvino plugins for audacity version 3.5.1 64bit. I have the correct version of the installer, but for some reason when i try to install them i get the following response:
‘invalid file hash: expected’ and then a whole series of numbers. basically it’s not allowing me to install them. any ideas why?

also, does anyone know of a good plugin for vocal remover?