Glimmering Weald causes JER to fail to load.
1.19.2 and 1.20.1 were tested as a comparison group.
If this issue is caused by changes in the JER, feel free to point it out.

1.20.1-beta

Tested for Artifact-740 & 582.
JustEnoughResources-1.20.1-1.4.0.222 same.

Leave Glimmering Weald only

JER can not load
debug.log

Disabled Glimmering Weald only

JER can load normally
debug.log

1.19.2-418

Nothing disabled, loaded normally except cartographer throwing NPE (a issue Just an issue that has been fixed in 1.20.1)

debug.log

oh damn i didn't know registering biomes through code could cause this much problems !!

it's possible this is occurring because biome lookups are being done too early in JER?

@qznfbnj is this reproducible post 7db5549 ?

@qznfbnj is this reproducible post 7db5549 ?

Test for artifact-750 (which include 7db5549), same.
debug.log

Could you check if 11dc39e (4.0-beta-425) fixes this?

Could you check if 11dc39e (4.0-beta-425) fixes this?

yes it works (tested with artifact-767), but it say //This is a terrible temporary fix until the real issue is found , so i don't know if i should close this issue.

It'll be fine to close it for now, we will try finding a better way to fix it later ^^