"Caught error loading resourcepacks, removing all selected resourcepacks" thrown due to AE2 CompletableFuture

[oitsjustjose]

Describe the bug

When loading in a minimal instance with only AE2 and my resource pack, my resource pack fails to load. It contains some compatibility for other mods, but none for AE2 so I'm unsure what would be causing a conflict here. This is the line which is indicated in the error (here).

Excerpt from logs since it's not included in the forced crash report :

[09:05:17] [Render thread/INFO] [minecraft/Minecraft]: Caught error loading resourcepacks, removing all selected resourcepacks
java.util.concurrent.CompletionException: java.util.NoSuchElementException: No value present
	at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:315) ~[?:?] {}
	at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:320) ~[?:?] {}
	at java.base/java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:722) ~[?:?] {}
	at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:482) ~[?:?] {}
	at TRANSFORMER/[email protected]/net.minecraft.server.packs.resources.SimpleReloadInstance.lambda$new$3(SimpleReloadInstance.java:69) ~[client-1.21.1-20240808.144430-srg.jar%23181!/:?] {re:classloading}
	at TRANSFORMER/[email protected]/net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:148) ~[client-1.21.1-20240808.144430-srg.jar%23181!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
	at TRANSFORMER/[email protected]/net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:23) ~[client-1.21.1-20240808.144430-srg.jar%23181!/:?] {re:mixin,re:computing_frames,re:classloading}
	at TRANSFORMER/[email protected]/net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:122) ~[client-1.21.1-20240808.144430-srg.jar%23181!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
	at TRANSFORMER/[email protected]/net.minecraft.util.thread.BlockableEventLoop.runAllTasks(BlockableEventLoop.java:111) ~[client-1.21.1-20240808.144430-srg.jar%23181!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
	at TRANSFORMER/[email protected]/net.minecraft.client.Minecraft.runTick(Minecraft.java:1155) ~[client-1.21.1-20240808.144430-srg.jar%23181!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:ae2.mixins.json:PickColorMixin from mod ae2,pl:mixin:A,pl:runtimedistcleaner:A}
	at TRANSFORMER/[email protected]/net.minecraft.client.Minecraft.run(Minecraft.java:807) ~[client-1.21.1-20240808.144430-srg.jar%23181!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:ae2.mixins.json:PickColorMixin from mod ae2,pl:mixin:A,pl:runtimedistcleaner:A}
	at TRANSFORMER/[email protected]/net.minecraft.client.main.Main.main(Main.java:230) ~[client-1.21.1-20240808.144430-srg.jar%23181!/:?] {re:classloading,pl:runtimedistcleaner:A}
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[?:?] {}
	at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[?:?] {}
	at MC-BOOTSTRAP/[email protected]/net.neoforged.fml.loading.targets.CommonLaunchHandler.runTarget(CommonLaunchHandler.java:136) ~[loader-4.0.35.jar%23169!/:4.0] {}
	at MC-BOOTSTRAP/[email protected]/net.neoforged.fml.loading.targets.CommonLaunchHandler.clientService(CommonLaunchHandler.java:124) ~[loader-4.0.35.jar%23169!/:4.0] {}
	at MC-BOOTSTRAP/[email protected]/net.neoforged.fml.loading.targets.CommonClientLaunchHandler.runService(CommonClientLaunchHandler.java:32) ~[loader-4.0.35.jar%23169!/:4.0] {}
	at MC-BOOTSTRAP/[email protected]/net.neoforged.fml.loading.targets.CommonLaunchHandler.lambda$launchService$4(CommonLaunchHandler.java:118) ~[loader-4.0.35.jar%23169!/:4.0] {}
	at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) [modlauncher-11.0.4.jar%23172!/:?] {}
	at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) [modlauncher-11.0.4.jar%23172!/:?] {}
	at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) [modlauncher-11.0.4.jar%23172!/:?] {}
	at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.Launcher.run(Launcher.java:103) [modlauncher-11.0.4.jar%23172!/:?] {}
	at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.Launcher.main(Launcher.java:74) [modlauncher-11.0.4.jar%23172!/:?] {}
	at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) [modlauncher-11.0.4.jar%23172!/:?] {}
	at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) [modlauncher-11.0.4.jar%23172!/:?] {}
	at [email protected]/cpw.mods.bootstraplauncher.BootstrapLauncher.run(BootstrapLauncher.java:210) [bootstraplauncher-2.0.2.jar:?] {}
	at [email protected]/cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:69) [bootstraplauncher-2.0.2.jar:?] {}
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[?:?] {}
	at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[?:?] {}
	at io.github.zekerzhayard.forgewrapper.installer.Main.main(Main.java:67) [ForgeWrapper-prism-2024-02-29.jar:prism-2024-02-29] {}
	at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:105) [NewLaunch.jar:?] {}
	at org.prismlauncher.EntryPoint.listen(EntryPoint.java:129) [NewLaunch.jar:?] {}
	at org.prismlauncher.EntryPoint.main(EntryPoint.java:70) [NewLaunch.jar:?] {}
Caused by: java.util.NoSuchElementException: No value present
	at java.base/java.util.Optional.orElseThrow(Optional.java:377) ~[?:?] {}
	at TRANSFORMER/[email protected]/appeng.client.guidebook.navigation.NavigationTree.createNode(NavigationTree.java:119) ~[appliedenergistics2-19.1.3-beta.jar%23183!/:?] {re:classloading}
	at TRANSFORMER/[email protected]/appeng.client.guidebook.navigation.NavigationTree.build(NavigationTree.java:91) ~[appliedenergistics2-19.1.3-beta.jar%23183!/:?] {re:classloading}
	at TRANSFORMER/[email protected]/appeng.client.guidebook.Guide.buildNavigation(Guide.java:402) ~[appliedenergistics2-19.1.3-beta.jar%23183!/:?] {re:classloading}
	at TRANSFORMER/[email protected]/appeng.client.guidebook.Guide$ReloadListener.apply(Guide.java:339) ~[appliedenergistics2-19.1.3-beta.jar%23183!/:?] {re:classloading}
	at TRANSFORMER/[email protected]/appeng.client.guidebook.Guide$ReloadListener.apply(Guide.java:292) ~[appliedenergistics2-19.1.3-beta.jar%23183!/:?] {re:classloading}
	at TRANSFORMER/[email protected]/net.minecraft.server.packs.resources.SimplePreparableReloadListener.lambda$reload$1(SimplePreparableReloadListener.java:19) ~[client-1.21.1-20240808.144430-srg.jar%23181!/:?] {re:classloading}
	at java.base/java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:718) ~[?:?] {}
	... 30 more
[09:05:17] [Render thread/INFO] [minecraft/ReloadableResourceManager]: Reloading ResourceManager: vanilla, mod_resources, mod/neoforge, mod/ae2

How to reproduce the bug

1. Install AE2
2. Apply a Resource Pack
3. See that the Resource Pack fails to load

Expected behavior

Resource Packs to not fail to load

Additional details

No response

Which minecraft version are you using?

1.21

On which mod loaders does it happen?

NeoForge

Crash log

https://gist.github.com/oitsjustjose/6e879a63ac6e53e311a013e80f34e3c1

[oitsjustjose]

Ok, I have sorted out that specifically anything in the ae2guide subdirectories of my resource pack cause this to happen; removing them resolves the issue and allows the resource pack to load correctly.

[shartte]

I have seen that reported on the new guide project too.
Can you attach your resource pack to the issue please?

[oitsjustjose]

Sure thing -- provided down below. It's a resource pack that was initially used to port the 1.21 retexture of AE2 (and its accompanying add-ons) to 1.20.1, and had been added in error so I was able to resolve my issue in my side.

Textures were literally extracted from a mod into a RP -- here's the mod if you're interested.

AE2 Resource Loader Crash Pack.zip