Uncaught exception in thread main, 1.21.10 on Modrinth Launcher

Using the modrinth launcher on 1.21.10 with just Fabric API + YACL 3.8.2 prevents game from starting with the following error:

Uncaught exception in thread "main" java.lang.reflect.InvocationTargetException at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:119) at java.base/java.lang.reflect.Method.invoke(Method.java:565) at com.modrinth.theseus.MinecraftLaunch.relaunch(MinecraftLaunch.java:61) at com.modrinth.theseus.MinecraftLaunch.main(MinecraftLaunch.java:28) Caused by: java.lang.RuntimeException: Failed to read accessWidener file from mod yet_another_config_lib_v3 at net.fabricmc.loader.impl.FabricLoaderImpl.loadAccessWideners(FabricLoaderImpl.java:534) at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:145) at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:66) at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ... 3 more Caused by: net.fabricmc.loader.impl.lib.accesswidener.AccessWidenerFormatException: line 1: Invalid access widener file header. Expected: 'accessWidener <version> <namespace>' at net.fabricmc.loader.impl.lib.accesswidener.AccessWidenerReader.readHeader(AccessWidenerReader.java:158) at net.fabricmc.loader.impl.lib.accesswidener.AccessWidenerReader.read(AccessWidenerReader.java:78) at net.fabricmc.loader.impl.FabricLoaderImpl.loadAccessWideners(FabricLoaderImpl.java:532) ... 7 more

Disabling YACL or switching to version 3.8.1 allows the game the start up normally

Reproduce the startup failure in Modrinth Launcher with Minecraft 1.21.10, Fabric API, and YACL 3.8.2, then compare it with YACL 3.8.1, which starts normally. Start with the FabricLoaderImpl.loadAccessWideners stack-trace path and the YACL 3.8.2 artifact; done means the minimal setup launches without the access widener header error.