BlueMap crashes server on Forge MDK

Just like discussed on discord it seems that BlueMap is not functional in the Forge MDK, which is setting up a mapped/deobfuscated development environment. The server always crashes with a NoSuchMethodError referencing an unmapped/obfuscated method making running BlueMap in the standard development environment for Forge impossible.

This makes the development of a 3rd party extension for BlueMap on Forge very difficult. I probably wont bother with it anymore. Just leaving the issue here for visibility.

What i did / Steps to reproduce

• Download latest Forge MDK for MC 1.16
• Import in IntelliJ as Gradle project
• run “gradle genIntellijRuns”
• Download latest Forge 1.16 build of BlueMap (currently BlueMap-1.5.2-forge-1.16.4.jar)
• Move downloaded JAR file into the IntelliJ project in run/mods
• Set eula=true in run/eula.txt
• Launch runServer

Expected result

Server starts, accepts connections from MC and also from a web browser accessing localhost:8100.

Actual result

Server crashes and stops with a Stacktrace in console and run/logs/latest.log:

java.lang.NoSuchMethodError: net.minecraft.server.MinecraftServer.func_195571_aL()Lnet/minecraft/command/Commands;
    at de.bluecolored.bluemap.forge.ForgeMod.onServerStarting(ForgeMod.java:103) ~[bluemap:?] {re:classloading}
    at net.minecraftforge.eventbus.ASMEventHandler_135_ForgeMod_onServerStarting_FMLServerStartingEvent.invoke(.dynamic) ~[?:?] {}
    at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:85) ~[eventbus-4.0.0.jar:?] {}
    at net.minecraftforge.eventbus.EventBus.post(EventBus.java:302) ~[eventbus-4.0.0.jar:?] {}
    at net.minecraftforge.eventbus.EventBus.post(EventBus.java:283) ~[eventbus-4.0.0.jar:?] {}
    at net.minecraftforge.fml.server.ServerLifecycleHooks.handleServerStarting(ServerLifecycleHooks.java:102) ~[forge:?] {re:classloading}
    at net.minecraft.server.integrated.IntegratedServer.init(IntegratedServer.java:65) ~[forge:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.server.MinecraftServer.func_240802_v_(MinecraftServer.java:643) ~[forge:?] {re:classloading,pl:accesstransformer:B}
    at net.minecraft.server.MinecraftServer.lambda$startServer$0(MinecraftServer.java:233) ~[forge:?] {re:classloading,pl:accesstransformer:B}
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_292] {}

Context

Minecraft: 1.16.5

Forge: 36.1.25

BlueMap Version: 1.5.2-forge-1.16.4

[TBlueF]

@fk4dbad Yes, using fg.deobf( with files( will not deobfuscate the .jar, there is a warning about this in the build log ^^

[syorito-hatsuki]

Soo… FabricAPI 1.19 contains fabric-command-api-v2. And mod trying to find Caused by: java.lang.ClassNotFoundException: net.fabricmc.fabric.api.command.v1.CommandRegistrationCallback at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)

So maybe good updated libs in fabric build from V1 to V2