When you insert an item into the side of a filtered importer (e.g. by using Vanilla Hopper) the game crashes.

Modpack "FTB Ultimate Reloaded" V1.7.1
Game Version 1.12.2
ProjectRed Version 4.9.1.92

[11:37:12] [Server thread/ERROR] [minecraft/MinecraftServer]: Encountered an unexpected exception
net.minecraft.util.ReportedException: Ticking block entity
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:773) ~[MinecraftServer.class:?]
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:397) ~[nz.class:?]
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668) ~[MinecraftServer.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526) [MinecraftServer.class:?]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
Caused by: java.lang.ArrayIndexOutOfBoundsException: 9
at mrtjp.core.inventory.TInventory$class.getStackInSlot(invtraits.scala:34) ~[TInventory$class.class:?]
at mrtjp.projectred.expansion.TileFilteredImporter.func_70301_a(TileFilteredImporter.scala:31) ~[TileFilteredImporter.class:?]
at net.minecraftforge.items.wrapper.SidedInvWrapper.getStackInSlot(SidedInvWrapper.java:81) ~[SidedInvWrapper.class:?]
at net.minecraftforge.items.VanillaInventoryCodeHooks.isEmpty(VanillaInventoryCodeHooks.java:247) ~[VanillaInventoryCodeHooks.class:?]
at net.minecraftforge.items.VanillaInventoryCodeHooks.insertStack(VanillaInventoryCodeHooks.java:179) ~[VanillaInventoryCodeHooks.class:?]
at net.minecraftforge.items.VanillaInventoryCodeHooks.putStackInInventoryAllSlots(VanillaInventoryCodeHooks.java:164) ~[VanillaInventoryCodeHooks.class:?]
at net.minecraftforge.items.VanillaInventoryCodeHooks.insertHook(VanillaInventoryCodeHooks.java:144) ~[VanillaInventoryCodeHooks.class:?]
at net.minecraft.tileentity.TileEntityHopper.func_145883_k(TileEntityHopper.java:194) ~[avw.class:?]
at net.minecraft.tileentity.TileEntityHopper.func_145887_i(TileEntityHopper.java:137) ~[avw.class:?]
at net.minecraft.tileentity.TileEntityHopper.func_73660_a(TileEntityHopper.java:122) ~[avw.class:?]
at net.minecraft.world.World.func_72939_s(World.java:1835) ~[amu.class:?]
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:613) ~[oo.class:?]
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:767) ~[MinecraftServer.class:?]
... 4 more
[11:37:12] [Server thread/ERROR] [minecraft/MinecraftServer]: This crash report has been saved to: /home/gameserver/2837/ftproot/FTB_Ultimate_Reloaded/./crash-reports/crash-2019-11-03_11.37.12-server.txt
[11:37:12] [Server thread/INFO] [minecraft/MinecraftServer]: Stopping server