Hey,
BetterHUD is crashing when I look with BetterHUD (all features enabled) at a block of raw silicone ore, (this article is quite old, it doesn't look exactly the same)
, with the result java.lang.ArrayIndexOutOfBoundsException: -1. I'm quite sure that's it.
Logs are quite messed with buildcraft errors, sorry about that, the main problem sits in the end.
Thanks
2020-01-24-6.log

This appears to be a Galacticraft issue, and only 1.12.2 is supported currently. 1.8.9 is unlikely to receive a backport.