java.lang.IllegalArgumentException: Cannot create a fluidstack from a null fluid at net.minecraftforge.fluids.FluidStack.<init>(FluidStack.java:47) at hellfirepvp.astralsorcery.common.util.block.PrecisionSingleFluidCapabilityTank.drain(PrecisionSingleFluidCapabilityTank.java:174) at cofh.thermaldynamics.duct.attachments.servo.ServoFluid.tick(ServoFluid.java:91)
Full crash report

I cross-posted this same crash in CoFH against ThermalDynamics:
https://github.com/CoFH/Feedback/issues/469

Thanks, HellFirePvP !

Via 140e31a