Progressive lightmapper fail to write lightning data

1. What happened

I try to bake a scene with the progressive lightmapper. it finished baking all the maps but failed at writing the lighting data.

This is from the console and the message keeps repeating.

Failed copying the texture from 'C:/Users/Home/AppData/LocalLow/Unity/Caches/GiCache/a3/a310673e97f7cb0baacb22d2b804dd5b._comp_light.exr' to 'Temp/GI/ddf5f06eb8464973c0601e41d5d96bd0/Lightmap-45_comp_light.exr'.


Failed to copy lightmap snapshot assets to directory: Temp/GI/ddf5f06eb8464973c0601e41d5d96bd0

2. How we can reproduce it using the example you attached

Not sure it only happens when the map size is 2048 or larger

I try to clear the GI Cache and rebake but same problem failed when writing the lightning data.
Can i save the maps i already baked? Or i have to rebake everything?

I try to use enlighten but it took 2-3days and I had to cancel it.
I try to report a bug but it also struck at uploading.

 

I try increasing the GI Cache to 35gb and increase light size to 4K. It just baked one map and then stop and does nothing. anyway I just use lightmap size 1024. that works

 

in my case I decreased the lightmap size to 512 and it worked ok

 

I just ran into this issue in Unity 2022.3.23 on Windows 11 on a 3080Ti Mobile GPU. The default GI Cache was 12GB, I raised that to 50GB. It says "Failed to copy lightmap snapshot assets to director Temp/GI/2336084f007deca8191b2c95475875d1. After raising the cache to 50GB the Building Assets Search Index started to move again. 52662 artifacts to resolve?? Pretty wild. FYI I started using Mesh Baker to make a 900 piece object into 1 object and told it to reconstruct UV2s so that I could lightmap it properly. Then all this went down.