scalable lux x dynamic trees bug neoforge 1.21.1 #1229

Reflective blockstate analysis triggers client-only class load on dedicated server (Dynamic Trees DynamicHardnessBlockState)
Environment

Minecraft 1.21.1, NeoForge
ScalableLux version: (fill in — check your mods folder jar filename)
Dedicated server
Dynamic Trees 1.7.2 (dynamictrees-neoforge-1.21.1-1.7.2.jar)
Relevant mods present: C2ME (rewrites-chunk-system), ModernFix, FerriteCore, Sable, Copycats, KubeJS, Moonlight, Galosphere, Expandability

Description

BlockStateBaseMixin.initLightAccessState (scalablelux.mixins.json:common.blockstate) reflectively inspects each BlockState class via Class.getMethod(...) to detect custom lighting behavior. For Dynamic Trees' com.dtteam.dynamictrees.block.BlockWithDynamicHardness$DynamicHardnessBlockState, this reflection walk causes the classloader to resolve a client-only class (net.minecraft.client.resources.model.ModelResourceLocation, and separately net.minecraft.client.color.block.BlockColors) as part of getMethod's method-resolution walk up the class hierarchy.

NeoForge's RuntimeDistCleaner blocks loading those classes on DEDICATED_SERVER and throws RuntimeException: Attempted to load class ... for invalid dist DEDICATED_SERVER. ScalableLux catches this and logs:

[ScalableLux/]: Failed to analyze class "class com.dtteam.dynamictrees.block.BlockWithDynamicHardness$DynamicHardnessBlockState" for dynamic lighting, this will impact performance.

Because DynamicHardnessBlockState instances are created per-block-state and Dynamic Trees generates many of them during worldgen tree placement (Species.placeRootyDirtBlock → JoCode.generate → DynamicTreeFeature), this failure fires repeatedly — once per tree/blockstate — producing heavy log spam during world generation and presumably falling back to non-optimized lighting for these states.
Steps to Reproduce

Install ScalableLux + Dynamic Trees on a NeoForge 1.21.1 dedicated server.
Generate/load a new world with tree worldgen enabled (Dynamic Trees' DynamicTreeFeature running).
Observe repeated ScalableLux "Failed to analyze class ... DynamicHardnessBlockState" errors in the log, each with a RuntimeDistCleaner RuntimeException for ModelResourceLocation / BlockColors.

Expected Behavior

Blockstate reflection analysis should not attempt to resolve client-only classes on a dedicated server, or should fail silently/once per class rather than once per instance/tree.
Log excerpt

[Server thread/ERROR] [ne.ne.fm.co.as.RuntimeDistCleaner/DISTXFORM]: Attempted to load class net/minecraft/client/resources/model/ModelResourceLocation for invalid dist DEDICATED_SERVER
[Server thread/ERROR] [ScalableLux/]: Failed to analyze class "class net.minecraft.world.level.block.state.BlockState" for dynamic lighting, this will impact performance.
java.lang.RuntimeException: Attempted to load class net/minecraft/client/resources/model/ModelResourceLocation for invalid dist DEDICATED_SERVER
at ... net.neoforged.fml.common.asm.RuntimeDistCleaner.processClassWithFlags(RuntimeDistCleaner.java:60)
...
at net.minecraft.world.level.block.state.BlockBehaviour$BlockStateBase.handler$bcb000$scalablelux$initLightAccessState(BlockBehaviour.java:2004)
at net.minecraft.world.level.block.state.BlockBehaviour$BlockStateBase.initCache(BlockBehaviour.java:492)
...

[c2me-worker-0/ERROR] [ne.ne.fm.co.as.RuntimeDistCleaner/DISTXFORM]: Attempted to load class net/minecraft/client/color/block/BlockColors for invalid dist DEDICATED_SERVER
[c2me-worker-0/ERROR] [ScalableLux/]: Failed to analyze class "class com.dtteam.dynamictrees.block.BlockWithDynamicHardness$DynamicHardnessBlockState" for dynamic lighting, this will impact performance.
java.lang.RuntimeException: Attempted to load class net/minecraft/client/color/block/BlockColors for invalid dist DEDICATED_SERVER
at ... net.neoforged.fml.common.asm.RuntimeDistCleaner.processClassWithFlags(RuntimeDistCleaner.java:60)
...
at net.minecraft.world.level.block.state.BlockBehaviour$BlockStateBase.handler$bcb000$scalablelux$initLightAccessState(BlockBehaviour.java:2004)
at net.minecraft.world.level.block.state.BlockBehaviour$BlockStateBase.initCache(BlockBehaviour.java:492)
...
at com.dtteam.dynamictrees.tree.species.Species.placeRootyDirtBlock(Species.java:1078)
at com.dtteam.dynamictrees.worldgen.JoCode.generate(JoCode.java:171)
at com.dtteam.dynamictrees.tree.species.Species.generate(Species.java:2170)
at com.dtteam.dynamictrees.worldgen.feature.DynamicTreeFeature.genTree(DynamicTreeFeature.java:165)
at com.dtteam.dynamictrees.worldgen.feature.DynamicTreeFeature.generateTree(DynamicTreeFeature.java:119)
at com.dtteam.dynamictrees.worldgen.feature.DynamicTreeFeature.generateTrees(DynamicTreeFeature.java:81)
at com.dtteam.dynamictrees.worldgen.feature.DynamicTreeFeature.place(DynamicTreeFeature.java:68)
...

(repeats once per tree placed during worldgen)
Additional Notes

This does not appear to be a hard crash — server continues generating chunks and progresses normally (observed spawn-area preparation continuing past 30% with the errors still firing). Impact is log spam plus the stated "will impact performance" fallback for affected blockstates.