Silo waila exceptions when nothing inside it.

[balugaq]

[20:30:38 WARN]: java.lang.NullPointerException: Cannot invoke "org.bukkit.inventory.ItemStack.effectiveName()" because "this.stack" is null
[20:30:38 WARN]: at pylon-1.0.0-SNAPSHOT.jar//io.github.pylonmc.pylon.content.machines.storage.Silo.getWaila(Silo.java:190)
[20:30:38 WARN]: at rebar-1.0.0-SNAPSHOT.jar//io.github.pylonmc.rebar.waila.Waila.updateContents(Waila.kt:238)
[20:30:38 WARN]: at rebar-1.0.0-SNAPSHOT.jar//io.github.pylonmc.rebar.waila.Waila.access$updateContents(Waila.kt:53)
[20:30:38 WARN]: at rebar-1.0.0-SNAPSHOT.jar//io.github.pylonmc.rebar.waila.Waila$Companion$addPlayer$updateContentsJob$1.invokeSuspend(Waila.kt:302)
[20:30:38 WARN]: at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:34)
[20:30:38 WARN]: at kotlinx.coroutines.DispatchedTaskKt.resume(DispatchedTask.kt:233)
[20:30:38 WARN]: at kotlinx.coroutines.DispatchedTaskKt.dispatch(DispatchedTask.kt:152)
[20:30:38 WARN]: at kotlinx.coroutines.CancellableContinuationImpl.dispatchResume(CancellableContinuationImpl.kt:470)
[20:30:38 WARN]: at kotlinx.coroutines.CancellableContinuationImpl.resumeImpl$kotlinx_coroutines_core(CancellableContinuationImpl.kt:504)
[20:30:38 WARN]: at kotlinx.coroutines.CancellableContinuationImpl.resumeImpl$kotlinx_coroutines_core$default(CancellableContinuationImpl.kt:493)
[20:30:38 WARN]: at kotlinx.coroutines.CancellableContinuationImpl.resumeUndispatched(CancellableContinuationImpl.kt:596)
[20:30:38 WARN]: at rebar-1.0.0-SNAPSHOT.jar//io.github.pylonmc.rebar.async.BukkitMainThreadDispatcher.scheduleResumeAfterDelay$lambda$0(BukkitMainThreadDispatcher.kt:52)
[20:30:38 WARN]: at rebar-1.0.0-SNAPSHOT.jar//io.github.pylonmc.rebar.async.BukkitMainThreadDispatcher.run(BukkitMainThreadDispatcher.kt:33)
[20:30:38 WARN]: at org.bukkit.craftbukkit.scheduler.CraftTask.run(CraftTask.java:78)
[20:30:38 WARN]: at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:474)
[20:30:38 WARN]: at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1792)
[20:30:38 WARN]: at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:1645)
[20:30:38 WARN]: at net.minecraft.server.dedicated.DedicatedServer.tickServer(DedicatedServer.java:444)
[20:30:38 WARN]: at net.minecraft.server.MinecraftServer.processPacketsAndTick(MinecraftServer.java:1703)
[20:30:38 WARN]: at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1373)
[20:30:38 WARN]: at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:304)
[20:30:38 WARN]: at java.base/java.lang.Thread.run(Thread.java:1474)