Looks like it's crashing when testing for similar saplings. Not many mods (~10). With binnie mods.
Crash at:

forestry.arboriculture.genetics.TreeGrowthHelper.hasSufficientSaplingsAroundSapling(TreeGrowthHelper.java:65)

Full log: here

Looking over more logs, it seems that all of them contain stack traces for binnie tree growth. Should i move this issue there?

Getting the same issue still can't find a fix for it
Raw log: https://pastebin.com/8ytVq8Uw

Duplicate of ForestryMC/Binnie#626