https://paste.dimdev.org/uqugojeyex.mccrash

Modpack - Ancient TownCraft

java.lang.ArrayIndexOutOfBoundsException: 54
at net.shadowmage.ancientwarfare.automation.block.TorqueTier.byMetadata(TorqueTier.java:24)
at net.shadowmage.ancientwarfare.automation.block.BlockTorqueTransport.getStateFromMeta(BlockTorqueTransport.java:37)
at net.shadowmage.ancientwarfare.automation.block.BlockTorqueTransport.getStateForPlacement(BlockTorqueTransport.java:47)

have you seen this one happening again?

personnaly i do. i take all my mods on curseforge, maybe i should update it if it has been recently updated

BetterBuildersWands-1.12-0.12.0.251+d6c4d93.jar

Latest build off curseforge, using the official twitch launcher.

Ahahah, very fun, i never thought about it
I have the same issue :D
Im using Better Builder Wands mod

I will need more specifics on this one as I am not able to recreate. I have tried pointing it at windmill blocks as suggested, but because the crash log actually suggests this crashed with torque I have tried pointing it at every single torque thing in the windmill as well as tried placing a few myself and point the wand at those. I have also tried the same in multiplayer as well.

What I also find rather odd is that in the official better builder's wands repo I can't find the call that was made to AW code from bbw code in your crash log - net.shadowmage.ancientwarfare.automation.block.BlockTorqueTransport.getStateForPlacement.
It almost seems like you're not using the official build from curseforge, but some custom build that has this call.

Ok but I still need more info on how to recreate as I have described above.