Version Info

Minecraft: Java Edition 1.17
GeckoLib: 3.0.13
Loader: Fabric

Issue

After adding Geckolib to the Gradle buildscript, Gradle complains that it cannot remap an accesswidener from namespace named. It expected intermediary.

• Confirmed caused by adding Geckolib.
• Does not occur if Geckolib is removed from the buildscript.

Buildscript

• Outside the buildscript block, next to the Minecraft, Fabric API, and Fabric Loader dependencies.

repositories {
	maven {
		url 'https://maven.terraformersmc.com/releases'
		content {
			includeGroup('com.terraformersmc')
		}
	}
	maven {
		url "https://maven.shedaniel.me/"
		content {
			includeGroup('me.shedaniel')
		}
	}
	maven {
		url 'https://dl.cloudsmith.io/public/geckolib3/geckolib/maven/'
		content {
			includeGroup('software.bernie.geckolib')
		}
	}
}

dependencies {
	minecraft "com.mojang:minecraft:${project.minecraft_version}"
	mappings "net.fabricmc:yarn:${project.yarn_mappings}:v2"
	modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"
	modApi "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
	modApi "com.terraformersmc:modmenu:${project.modmenu_version}"

	modImplementation("software.bernie.geckolib:geckolib-fabric-1.17:${project.geckolib_version}:dev") {

	}
}

org.gradle.jvmargs = -Xmx1G
kotlin_version     = 1.5.30

minecraft_version  = 1.17.1
yarn_mappings      = 1.17.1+build.61
loader_version     = 0.11.7
fabric_version     = 0.40.1+1.17

mod_version        = 1.0.0
maven_group        = com.halotroop
archives_base_name = mod-suite

modmenu_version    = 2.0.11
rei_version        = 6.0.279-alpha
geckolib_version   = 3.0.13

Stacktrace:

Caused by: java.lang.IllegalArgumentException: Cannot remap access widener from namespace 'named'. Expected: 'intermediary'
	at net.fabricmc.accesswidener.AccessWidenerRemapper.visitHeader(AccessWidenerRemapper.java:53)
	at net.fabricmc.accesswidener.AccessWidenerReader.read(AccessWidenerReader.java:93)
	at net.fabricmc.accesswidener.AccessWidenerReader.read(AccessWidenerReader.java:73)
	at net.fabricmc.accesswidener.AccessWidenerReader.read(AccessWidenerReader.java:66)
	at net.fabricmc.loom.configuration.mods.ModProcessor.remapAccessWidener(ModProcessor.java:120)
	at net.fabricmc.loom.configuration.mods.ModProcessor.remapJars(ModProcessor.java:186)
...200+ more lines

I also encountered this problem, but I changed the fabric-loom to version 0.9 and it can be used normally. You can also try

Update to 3.0.14 and retest please. Please check the CurseForge for any updates, wiki site is currently broken and not showing the updates. Site will be converted to Github Pages after my vacation.

Yep. Still happens on 3.0.14 and 3.0.15, despite your premature closure of the issue.

I closed after a week of no reply. I have no issues with my own fabric mods. If you are using Parchment it's unsupported at this time

Your issue template and posting guidelines (read: lack thereof) does not state a deadline for issues to be resolved. It's customary to wait for a response in these matters, unless explicitly stated otherwise.

As mentioned above by @MiniDay, this issue does not occur while using Loom 0.9, and is likely caused by incompatibility with Loom 0.10.

Please ensure Geckolib is compliant with the latest version of Loom. Thank you.

Loom 10 is unsupported as its the unstable branch, we target the stable.

https://fabricmc.net/versions.html
http://imgur.com/a/vmI4Eg9