NullPointerException: Cannot invoke "org.joml.Quaternionfc.w()" because "quat" is null

What it looks like in the log

java.lang.NullPointerException: Cannot invoke "org.joml.Quaternionfc.w()" because "quat" is null

How to fix it

1. Update the Create Fly mod to its latest version if com.zurrtum.create or FrogportRenderer appears in your crash report, as the developer patched the Package Frogport rendering crash.
2. If Create Fly is not installed, look at the stack trace line directly below com.mojang.blaze3d.vertex.PoseStack.mulPose to identify which mod owns the broken renderer, then update or remove that mod.
3. If your world crashes immediately upon loading because the broken block is already placed nearby, update the offending mod before rejoining, or temporarily enable 'removeErroringBlockEntities' in your loader/server configuration (after making a world backup) to delete the crashing block.

Check your own log