Bug Report

Observed Behaviour
If we deploy our Tetra-Tool into the Tetra-"Workbench" then we have the repair-button, which requests a Tier 0 Hammer.
Also I have in my inventory a Tier 4 Hammer and can attach new part, but Repair isn't working.

Found on my Serverlog following:

[19Jan2021 17:23:06.075] [Server thread/INFO] [pneumaticcraft/]: 30 active Amadron offers to sync to clients [19Jan2021 17:25:01.125] [Server thread/FATAL] [net.minecraft.util.concurrent.ThreadTaskExecutor/]: Error executing task on Server java.lang.NullPointerException: null at se.mickelus.tetra.module.schematic.ConfigSchematic.isApplicableForItem(ConfigSchematic.java:146) ~[tetra:3.5.3] at se.mickelus.tetra.module.SchematicRegistry.lambda$getAvailableSchematics$11(SchematicRegistry.java:139) ~[tetra:3.5.3] at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:174) ~[?:1.8.0_275] at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[?:1.8.0_275] at java.util.HashMap$ValueSpliterator.forEachRemaining(HashMap.java:1628) ~[?:1.8.0_275] at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482) ~[?:1.8.0_275] at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472) ~[?:1.8.0_275] at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:546) ~[?:1.8.0_275] at java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260) ~[?:1.8.0_275] at java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:505) ~[?:1.8.0_275] at se.mickelus.tetra.module.SchematicRegistry.getAvailableSchematics(SchematicRegistry.java:140) ~[tetra:3.5.3] at se.mickelus.tetra.blocks.workbench.action.RepairAction.canPerformOn(RepairAction.java:30) ~[tetra:3.5.3] at se.mickelus.tetra.blocks.workbench.WorkbenchTile.lambda$performAction$5(WorkbenchTile.java:159) ~[tetra:3.5.3] at java.util.Optional.filter(Optional.java:178) ~[?:1.8.0_275] at se.mickelus.tetra.blocks.workbench.WorkbenchTile.performAction(WorkbenchTile.java:159) ~[tetra:3.5.3] at se.mickelus.tetra.blocks.workbench.action.WorkbenchActionPacket.handle(WorkbenchActionPacket.java:47) ~[tetra:3.5.3] at se.mickelus.tetra.network.PacketHandler.lambda$onMessage$2(PacketHandler.java:79) ~[tetra:3.5.3] at net.minecraftforge.fml.network.NetworkEvent$Context.enqueueWork(NetworkEvent.java:215) ~[forge:?] at se.mickelus.tetra.network.PacketHandler.onMessage(PacketHandler.java:77) ~[tetra:3.5.3] at net.minecraftforge.fml.network.simple.IndexedMessageCodec.lambda$tryDecode$3(IndexedMessageCodec.java:128) ~[forge:?] at java.util.Optional.ifPresent(Optional.java:159) ~[?:1.8.0_275] at net.minecraftforge.fml.network.simple.IndexedMessageCodec.tryDecode(IndexedMessageCodec.java:128) ~[forge:?] at net.minecraftforge.fml.network.simple.IndexedMessageCodec.consume(IndexedMessageCodec.java:162) ~[forge:?] at net.minecraftforge.fml.network.simple.SimpleChannel.networkEventListener(SimpleChannel.java:80) ~[forge:?] at net.minecraftforge.eventbus.EventBus.doCastFilter(EventBus.java:247) ~[eventbus-3.0.5-service.jar:?] at net.minecraftforge.eventbus.EventBus.lambda$addListener$11(EventBus.java:239) ~[eventbus-3.0.5-service.jar:?] at net.minecraftforge.eventbus.EventBus.post(EventBus.java:297) ~[eventbus-3.0.5-service.jar:?] at net.minecraftforge.fml.network.NetworkInstance.dispatch(NetworkInstance.java:84) ~[forge:?] at net.minecraftforge.fml.network.NetworkHooks.lambda$onCustomPayload$1(NetworkHooks.java:88) ~[forge:?] at java.util.Optional.map(Optional.java:215) ~[?:1.8.0_275] at net.minecraftforge.fml.network.NetworkHooks.onCustomPayload(NetworkHooks.java:88) ~[forge:?] at net.minecraft.network.play.ServerPlayNetHandler.func_147349_a(ServerPlayNetHandler.java:1413) ~[?:?] at net.minecraft.network.play.client.CCustomPayloadPacket.func_148833_a(CCustomPayloadPacket.java:42) ~[?:?] at net.minecraft.network.play.client.CCustomPayloadPacket.func_148833_a(CCustomPayloadPacket.java:12) ~[?:?] at net.minecraft.network.PacketThreadUtil.func_225383_a(SourceFile:21) ~[?:?] at net.minecraft.util.concurrent.TickDelayedTask.run(SourceFile:18) ~[?:?] at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213166_h(SourceFile:144) ~[?:?] at net.minecraft.util.concurrent.RecursiveEventLoop.func_213166_h(SourceFile:23) ~[?:?] at net.minecraft.server.MinecraftServer.func_213166_h(MinecraftServer.java:733) ~[?:?] at net.minecraft.server.MinecraftServer.func_213166_h(MinecraftServer.java:159) ~[?:?] at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213168_p(SourceFile:118) ~[?:?] at net.minecraft.server.MinecraftServer.func_213205_aW(MinecraftServer.java:716) ~[?:?] at net.minecraft.server.MinecraftServer.func_213168_p(MinecraftServer.java:710) ~[?:?] at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213160_bf(SourceFile:103) ~[?:?] at net.minecraft.server.MinecraftServer.func_213202_o(MinecraftServer.java:695) ~[?:?] at net.minecraft.server.MinecraftServer.func_240802_v_(MinecraftServer.java:645) ~[?:?] at net.minecraft.server.MinecraftServer.lambda$startServer$0(MinecraftServer.java:232) ~[?:?] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_275]

Expected Behaviour
I would say not receiving the NPE and also to repair our tools

Minimal setup needed to reproduce
Just use the "Enigmatic 6" Modpack

Unable to reproduce and the "Steps to reproduce" is missing, closing.

I need the fields in the template to fix the bugs, they're not there for fun. Closing, reply once you've updated the issue and I can reopen.