Fields in a mixin with @Unique crashes upon load

[kevinthegreat1]

this crashes with the following log [2022-10-29-4.log](https://github.com/SpongePowered/Mixin/files/9894904/2022-10-29-4.log) without @unique it works fine. None of the mixin target classes have the fields, nor does any superclass. It looks like the accesses to the fields are being refactored, but not the actual fields.

Any help would be appreciated.