[23:53:42] [Worker-ResourceReload-10/ERROR] [minecraft/ModelManager]: Failed to load model hammerlib:models/block/test.json
com.google.gson.JsonParseException: Model loader 'hammerlib:block/test' not found. Registered loaders: structurize:overlaid, woot_revived:factory_upgrade, codechickenlib:class, enderio:conduit_item, enderio:conduit, extendedae:assembler_matrix_glass, neoforge:fluid_container, neoforge:composite, avaritia:halo, supplementaries:rope_knot, supplementaries:book_pile, endercore:modloaded, domum_ornamentum:materially_textured, mekanism:energy_cube, hammerlib:emissive, hammerlib:multi_layer, enderio:facades_item, supplementaries:goblet, codechickenlib:item_composite, enderio:painted_block, fastpaintings:painting, twilightforest:connected_texture_block, supplementaries:frame_block, mekanism:robit, travelersbackpack:backpack, framework:open_model, undergarden:cloggrum_bucket, supplementaries:way_sign, supplementaries:extra_rotation, twilightforest:royal_rags, extendedae:active_formation_plane, hammerlib:grouped, supplementaries:blackboard, neoforge:item_layers, athena:athena, supplementaries:flower_box, twilightforest:force_field, guideme:guide_item_dispatcher, twilightforest:giant_block, extendedae:active_formation_plane_on, supplementaries:jar, solarflux:solar_panel, supplementaries:faucet, mekanism:transmitter, extendedae:ex_drive, neoforge:empty, avaritia:cosmic, twilightforest:patch, twilightforest:noise_varying, neoforge:separate_transforms, enderio:io_overlay, modonomicon:book_model_loader, mekanism:data_based, neoforge:elements, neoforge:obj, supplementaries:rope_bunting
at TRANSFORMER/[email protected]/net.neoforged.neoforge.client.model.ExtendedBlockModelDeserializer.deserializeGeometry(ExtendedBlockModelDeserializer.java:102) ~[neoforge-21.1.209-universal.jar%23608!/:?] {re:classloading}
at TRANSFORMER/[email protected]/net.neoforged.neoforge.client.model.ExtendedBlockModelDeserializer.deserialize(ExtendedBlockModelDeserializer.java:53) ~[neoforge-21.1.209-universal.jar%23608!/:?] {re:classloading}
at TRANSFORMER/[email protected]/net.neoforged.neoforge.client.model.ExtendedBlockModelDeserializer.deserialize(ExtendedBlockModelDeserializer.java:37) ~[neoforge-21.1.209-universal.jar%23608!/:?] {re:classloading}
at MC-BOOTSTRAP/[email protected]/com.google.gson.internal.bind.TreeTypeAdapter.read(TreeTypeAdapter.java:76) ~[gson-2.10.1.jar%23123!/:?] {}
at TRANSFORMER/[email protected]/net.minecraft.util.GsonHelper.fromNullableJson(GsonHelper.java:525) ~[client-1.21.1-20240808.144430-srg.jar%23607!/:?] {re:classloading,re:mixin}
at TRANSFORMER/[email protected]/net.minecraft.util.GsonHelper.fromJson(GsonHelper.java:532) ~[client-1.21.1-20240808.144430-srg.jar%23607!/:?] {re:classloading,re:mixin}
at TRANSFORMER/[email protected]/net.minecraft.util.GsonHelper.fromJson(GsonHelper.java:582) ~[client-1.21.1-20240808.144430-srg.jar%23607!/:?] {re:classloading,re:mixin}
at TRANSFORMER/[email protected]/net.minecraft.client.renderer.block.model.BlockModel.fromStream(BlockModel.java:83) ~[client-1.21.1-20240808.144430-srg.jar%23607!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:computing_frames,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:mixins.redirected_neoforge_1.21.1.json:forge.net.minecraft.client.renderer.block.model.BlockModelMixin from mod redirected,pl:mixin:APP:moreculling.mixins.json:models.cullshape.BlockModel_cullShapeMixin from mod moreculling,pl:mixin:A,pl:runtimedistcleaner:A}
at TRANSFORMER/[email protected]/net.minecraft.client.resources.model.ModelManager.lambda$loadBlockModels$8(ModelManager.java:144) ~[client-1.21.1-20240808.144430-srg.jar%23607!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:emi.mixins.json:accessor.BakedModelManagerAccessor from mod emi,pl:mixin:APP:rearm.mixins.json:ModelManagerMixin from mod rearm,pl:mixin:APP:fabric-resource-loader-v0.client.mixins.json:KeyedResourceReloadListenerClientMixin from mod fabric_resource_loader_v0,pl:mixin:APP:fabric-model-loading-api-v1.mixins.json:BakedModelManagerMixin from mod fabric_model_loading_api_v1,pl:mixin:APP:moreculling.mixins.json:models.cullshape.ModelManager_cullShapeMixin from mod moreculling,pl:mixin:A,pl:runtimedistcleaner:A}
at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768) [?:?] {}
at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1760) [?:?] {}
at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387) [?:?] {}
at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312) [?:?] {}
at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843) [?:?] {re:mixin,re:computing_frames}
at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808) [?:?] {re:mixin,re:computing_frames}
at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188) [?:?] {re:mixin}

Model loading is never critical to game startup, and is used internally for testing, ignore the stack trace.