Help with converting a pc avatar to quest

Hello, I recently bought the Moopdrea Cat avatar and I quite like it. I want to use it on my Quest and PC. However, I am having this really odd error and I am not sure what is happening. I wonder if anyone has uploaded this avatar as quest and what I possibly need to do to help make it functional. I have done a couple of avatars pc to quest, but this one is giving me a bit of a road block.