cycles combined bake coming out black hi so i'm creating a high gloss golden earring with a pearl detail, but both textures are coming out black in baking (the object is merged because the programme i plan on uploading to can only have file sizes of a certain size). i'm using some random hdri i got for free online, so you can play around with that when you experiment, i won't be too butthurt. I honestly don't kniow what i'm doing wrong. I've tried baking the following combinations of nodes for each texture (seeing as they both have similar levels of glossiness, i just did the same for both and changed the colours/roughness):

combination 1:
fresnel node,
diffuse bsdf,
glossy bsdf,
plugged into a mix shader
(i also tried this without the fresnel, no change)

combination 2:
principled bsdf,
glossy bsdf,
plugged into a mix shader
(also came out black)

here's my blend file: https://www.dropbox.com/s/nldwlauxfutffx4/vintage%20gold%20earrings.blend?dl=0

go crazy if you want, i'd just really like to know wtf i'm doing wrong because i'm creating quite a few shiny objects for various projects at the moment and i'm (somewhat) consistently getting this issue, and sometimes i fix it but idk how, sometimes i don't. so yeah, any help would be GREATLY appreciated.
A lot of objects are hidden for the viewport, but visible for the render. Since a baking is a render, those objects cover your main object and prevent the light to hit it.



Click the "funnel" icon (Filters) then activate the "camera" icon (Disable in Renders). Then for each object in the list where the "eye" icon is unchecked, uncheck the "camera" icon.