I am using:

• Fabric Loader 0.11.3 for 1.16
• Fabric API 0.34.2
• Mubble 4.0 pre9
• Trinkets 2.6.7
• Minecraft version 1.16.5
  I tried 2 different versions of Dawn API, and got 2 different results:
• With Dawn API 1.8 the game opened normally, but opening a world completely freezed the game, forcing me to manually crash the game.
• With Dawn API 1.7 the game crashed, leaving this message:
  Error: java.lang.RuntimeException: Could not execute entrypoint stage 'main' due to errors, provided by 'mubble'!
  Exit Code: -1

Here are 2 crash logs:
Dawn API 1.8
---- Minecraft Crash Report ---- // Surprise! Haha. Well, this is awkward. Time: 24.05.21 20:08 Description: Initializing game java.lang.RuntimeException: Could not execute entrypoint stage 'main' due to errors, provided by 'mubble'! at net.fabricmc.loader.entrypoint.minecraft.hooks.EntrypointUtils.invoke0(EntrypointUtils.java:53) at net.fabricmc.loader.entrypoint.minecraft.hooks.EntrypointUtils.invoke(EntrypointUtils.java:36) at net.fabricmc.loader.entrypoint.minecraft.hooks.EntrypointClient.start(EntrypointClient.java:32) at net.minecraft.class_310.<init>(class_310.java:437) at net.minecraft.client.main.Main.main(Main.java:177) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:226) at net.fabricmc.loader.launch.knot.Knot.launch(Knot.java:146) at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:28) Caused by: java.lang.NoClassDefFoundError: me/shedaniel/autoconfig/serializer/PartitioningSerializer$GlobalData at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:760) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at net.fabricmc.loader.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:163) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at com.hugman.mubble.Mubble.<clinit>(Mubble.java:28) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at net.fabricmc.loader.util.DefaultLanguageAdapter.create(DefaultLanguageAdapter.java:45) at net.fabricmc.loader.EntrypointStorage$NewEntry.create(EntrypointStorage.java:112) at net.fabricmc.loader.EntrypointStorage$NewEntry.getOrCreate(EntrypointStorage.java:99) at net.fabricmc.loader.EntrypointStorage.lambda$getEntrypointContainers$1(EntrypointStorage.java:184) at net.fabricmc.loader.EntrypointStorage$$Lambda$2237/1950335470.get(Unknown Source) at net.fabricmc.loader.entrypoint.EntrypointContainerImpl.getEntrypoint(EntrypointContainerImpl.java:37) at net.fabricmc.loader.entrypoint.minecraft.hooks.EntrypointUtils.invoke0(EntrypointUtils.java:50) ... 11 more Caused by: java.lang.ClassNotFoundException: me.shedaniel.autoconfig.serializer.PartitioningSerializer$GlobalData at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at net.fabricmc.loader.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:168) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 26 more A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Render thread Stacktrace: at net.fabricmc.loader.entrypoint.minecraft.hooks.EntrypointUtils.invoke0(EntrypointUtils.java:53) at net.fabricmc.loader.entrypoint.minecraft.hooks.EntrypointUtils.invoke(EntrypointUtils.java:36) at net.fabricmc.loader.entrypoint.minecraft.hooks.EntrypointClient.start(EntrypointClient.java:32) at net.minecraft.class_310.<init>(class_310.java:437) -- Initialization -- Details: Stacktrace: at net.minecraft.client.main.Main.main(Main.java:177) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:226) at net.fabricmc.loader.launch.knot.Knot.launch(Knot.java:146) at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:28) -- System Details -- Details: Minecraft Version: 1.16.5 Minecraft Version ID: 1.16.5 Operating System: Windows 10 (amd64) version 10.0 Java Version: 1.8.0_51, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 1255595592 bytes (1197 MB) / 1912602624 bytes (1824 MB) up to 2147483648 bytes (2048 MB) CPUs: 8 JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M Fabric Mods: autoconfig1u: Auto Config v1 Updated 3.3.1 cardinal-components-base: Cardinal Components API (base) 2.5.0 cardinal-components-entity: Cardinal Components API (entities) 2.5.0 cloth-basic-math: Cloth Basic Math 0.5.1 cloth-config2: Cloth Config v4 4.8.3 dawn: Dawn API 1.7 fabric: Fabric API 0.34.2+1.16 fabric-api-base: Fabric API Base 0.3.0+c88702897d fabric-api-lookup-api-v1: Fabric API Lookup API (v1) 1.0.0+dc716ea17d fabric-biome-api-v1: Fabric Biome API (v1) 3.1.1+ca58154a7d fabric-blockrenderlayer-v1: Fabric BlockRenderLayer Registration (v1) 1.1.5+ca58154a7d fabric-command-api-v1: Fabric Command API (v1) 1.1.1+351679a77d fabric-commands-v0: Fabric Commands (v0) 0.2.2+ca58154a7d fabric-containers-v0: Fabric Containers (v0) 0.1.11+9354966b7d fabric-content-registries-v0: Fabric Content Registries (v0) 0.2.1+ca58154a7d fabric-crash-report-info-v1: Fabric Crash Report Info (v1) 0.1.3+ca58154a7d fabric-dimensions-v1: Fabric Dimensions API (v1) 2.0.6+61336ba97d fabric-entity-events-v1: Fabric Entity Events (v1) 1.1.0+c88702897d fabric-events-interaction-v0: Fabric Events Interaction (v0) 0.4.2+ca58154a7d fabric-events-lifecycle-v0: Fabric Events Lifecycle (v0) 0.2.1+ca58154a7d fabric-game-rule-api-v1: Fabric Game Rule API (v1) 1.0.6+ca58154a7d fabric-item-api-v1: Fabric Item API (v1) 1.2.1+ca58154a7d fabric-item-groups-v0: Fabric Item Groups (v0) 0.2.7+2868a2287d fabric-key-binding-api-v1: Fabric Key Binding API (v1) 1.0.4+9354966b7d fabric-keybindings-v0: Fabric Key Bindings (v0) 0.2.1+ca58154a7d fabric-lifecycle-events-v1: Fabric Lifecycle Events (v1) 1.2.1+ca58154a7d fabric-loot-tables-v1: Fabric Loot Tables (v1) 1.0.2+ca58154a7d fabric-mining-levels-v0: Fabric Mining Levels (v0) 0.1.3+ca58154a7d fabric-models-v0: Fabric Models (v0) 0.3.0+bc7a746f7d fabric-networking-api-v1: Fabric Networking API (v1) 1.0.3+e3c9d0627d fabric-networking-blockentity-v0: Fabric Networking Block Entity (v0) 0.2.8+ca58154a7d fabric-networking-v0: Fabric Networking (v0) 0.3.2+ca58154a7d fabric-object-builder-api-v1: Fabric Object Builder API (v1) 1.9.5+c88702897d fabric-object-builders-v0: Fabric Object Builders (v0) 0.7.2+ca58154a7d fabric-particles-v1: Fabric Particles (v1) 0.2.4+ca58154a7d fabric-registry-sync-v0: Fabric Registry Sync (v0) 0.7.4+ca58154a7d fabric-renderer-api-v1: Fabric Renderer API (v1) 0.4.2+2868a2287d fabric-renderer-indigo: Fabric Renderer - Indigo 0.4.4+ca58154a7d fabric-renderer-registries-v1: Fabric Renderer Registries (v1) 2.3.0+2868a2287d fabric-rendering-data-attachment-v1: Fabric Rendering Data Attachment (v1) 0.1.5+ca58154a7d fabric-rendering-fluids-v1: Fabric Rendering Fluids (v1) 0.1.13+ca58154a7d fabric-rendering-v0: Fabric Rendering (v0) 1.1.2+ca58154a7d fabric-rendering-v1: Fabric Rendering (v1) 1.6.0+2868a2287d fabric-resource-loader-v0: Fabric Resource Loader (v0) 0.4.6+2868a2287d fabric-screen-api-v1: Fabric Screen API (v1) 1.0.0+c045166c7d fabric-screen-handler-api-v1: Fabric Screen Handler API (v1) 1.1.5+9354966b7d fabric-structure-api-v1: Fabric Structure API (v1) 1.1.4+ca58154a7d fabric-tag-extensions-v0: Fabric Tag Extensions (v0) 1.1.1+ca58154a7d fabric-textures-v0: Fabric Textures (v0) 1.0.6+ca58154a7d fabric-tool-attribute-api-v1: Fabric Tool Attribute API (v1) 1.2.7+8183d3957d fabricloader: Fabric Loader 0.11.3 java: Java HotSpot(TM) 64-Bit Server VM 8 minecraft: Minecraft 1.16.5 mubble: Mubble 4.0-pre9 terraform-shapes-api-v1: Terraform Shapes API (v1) 1.0.4 terraform-tree-api-v1: Terraform Tree API (v1) 1.0.5 trinkets: Trinkets 2.6.7 Launched Version: fabric-loader-0.11.3-1.16.5 Backend library: LWJGL version 3.2.2 build 10 Backend API: NO CONTEXT GL Caps: Using VBOs: Yes Is Modded: Definitely; Client brand changed to 'fabric' Type: Client (map_client.txt) CPU: <unknown>
Dawn API 1.7
---- Minecraft Crash Report ---- // I just don't know what went wrong :( Time: 24.05.21 20:08 Description: Initializing game java.lang.RuntimeException: Could not execute entrypoint stage 'main' due to errors, provided by 'mubble'! at net.fabricmc.loader.entrypoint.minecraft.hooks.EntrypointUtils.invoke0(EntrypointUtils.java:53) at net.fabricmc.loader.entrypoint.minecraft.hooks.EntrypointUtils.invoke(EntrypointUtils.java:36) at net.fabricmc.loader.entrypoint.minecraft.hooks.EntrypointClient.start(EntrypointClient.java:32) at net.minecraft.class_310.<init>(class_310.java:437) at net.minecraft.client.main.Main.main(Main.java:177) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:226) at net.fabricmc.loader.launch.knot.Knot.launch(Knot.java:146) at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:28) Caused by: java.lang.NoClassDefFoundError: me/shedaniel/autoconfig/serializer/PartitioningSerializer$GlobalData at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:760) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at net.fabricmc.loader.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:163) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at com.hugman.mubble.Mubble.<clinit>(Mubble.java:28) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at net.fabricmc.loader.util.DefaultLanguageAdapter.create(DefaultLanguageAdapter.java:45) at net.fabricmc.loader.EntrypointStorage$NewEntry.create(EntrypointStorage.java:112) at net.fabricmc.loader.EntrypointStorage$NewEntry.getOrCreate(EntrypointStorage.java:99) at net.fabricmc.loader.EntrypointStorage.lambda$getEntrypointContainers$1(EntrypointStorage.java:184) at net.fabricmc.loader.EntrypointStorage$$Lambda$2234/1950335470.get(Unknown Source) at net.fabricmc.loader.entrypoint.EntrypointContainerImpl.getEntrypoint(EntrypointContainerImpl.java:37) at net.fabricmc.loader.entrypoint.minecraft.hooks.EntrypointUtils.invoke0(EntrypointUtils.java:50) ... 11 more Caused by: java.lang.ClassNotFoundException: me.shedaniel.autoconfig.serializer.PartitioningSerializer$GlobalData at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at net.fabricmc.loader.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:168) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 26 more A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Render thread Stacktrace: at net.fabricmc.loader.entrypoint.minecraft.hooks.EntrypointUtils.invoke0(EntrypointUtils.java:53) at net.fabricmc.loader.entrypoint.minecraft.hooks.EntrypointUtils.invoke(EntrypointUtils.java:36) at net.fabricmc.loader.entrypoint.minecraft.hooks.EntrypointClient.start(EntrypointClient.java:32) at net.minecraft.class_310.<init>(class_310.java:437) -- Initialization -- Details: Stacktrace: at net.minecraft.client.main.Main.main(Main.java:177) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:226) at net.fabricmc.loader.launch.knot.Knot.launch(Knot.java:146) at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:28) -- System Details -- Details: Minecraft Version: 1.16.5 Minecraft Version ID: 1.16.5 Operating System: Windows 10 (amd64) version 10.0 Java Version: 1.8.0_51, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 1487957056 bytes (1419 MB) / 1912602624 bytes (1824 MB) up to 2147483648 bytes (2048 MB) CPUs: 8 JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M Fabric Mods: autoconfig1u: Auto Config v1 Updated 3.3.1 cardinal-components-base: Cardinal Components API (base) 2.5.0 cardinal-components-entity: Cardinal Components API (entities) 2.5.0 cloth-basic-math: Cloth Basic Math 0.5.1 cloth-config2: Cloth Config v4 4.8.3 dawn: Dawn API 1.7 fabric: Fabric API 0.34.2+1.16 fabric-api-base: Fabric API Base 0.3.0+c88702897d fabric-api-lookup-api-v1: Fabric API Lookup API (v1) 1.0.0+dc716ea17d fabric-biome-api-v1: Fabric Biome API (v1) 3.1.1+ca58154a7d fabric-blockrenderlayer-v1: Fabric BlockRenderLayer Registration (v1) 1.1.5+ca58154a7d fabric-command-api-v1: Fabric Command API (v1) 1.1.1+351679a77d fabric-commands-v0: Fabric Commands (v0) 0.2.2+ca58154a7d fabric-containers-v0: Fabric Containers (v0) 0.1.11+9354966b7d fabric-content-registries-v0: Fabric Content Registries (v0) 0.2.1+ca58154a7d fabric-crash-report-info-v1: Fabric Crash Report Info (v1) 0.1.3+ca58154a7d fabric-dimensions-v1: Fabric Dimensions API (v1) 2.0.6+61336ba97d fabric-entity-events-v1: Fabric Entity Events (v1) 1.1.0+c88702897d fabric-events-interaction-v0: Fabric Events Interaction (v0) 0.4.2+ca58154a7d fabric-events-lifecycle-v0: Fabric Events Lifecycle (v0) 0.2.1+ca58154a7d fabric-game-rule-api-v1: Fabric Game Rule API (v1) 1.0.6+ca58154a7d fabric-item-api-v1: Fabric Item API (v1) 1.2.1+ca58154a7d fabric-item-groups-v0: Fabric Item Groups (v0) 0.2.7+2868a2287d fabric-key-binding-api-v1: Fabric Key Binding API (v1) 1.0.4+9354966b7d fabric-keybindings-v0: Fabric Key Bindings (v0) 0.2.1+ca58154a7d fabric-lifecycle-events-v1: Fabric Lifecycle Events (v1) 1.2.1+ca58154a7d fabric-loot-tables-v1: Fabric Loot Tables (v1) 1.0.2+ca58154a7d fabric-mining-levels-v0: Fabric Mining Levels (v0) 0.1.3+ca58154a7d fabric-models-v0: Fabric Models (v0) 0.3.0+bc7a746f7d fabric-networking-api-v1: Fabric Networking API (v1) 1.0.3+e3c9d0627d fabric-networking-blockentity-v0: Fabric Networking Block Entity (v0) 0.2.8+ca58154a7d fabric-networking-v0: Fabric Networking (v0) 0.3.2+ca58154a7d fabric-object-builder-api-v1: Fabric Object Builder API (v1) 1.9.5+c88702897d fabric-object-builders-v0: Fabric Object Builders (v0) 0.7.2+ca58154a7d fabric-particles-v1: Fabric Particles (v1) 0.2.4+ca58154a7d fabric-registry-sync-v0: Fabric Registry Sync (v0) 0.7.4+ca58154a7d fabric-renderer-api-v1: Fabric Renderer API (v1) 0.4.2+2868a2287d fabric-renderer-indigo: Fabric Renderer - Indigo 0.4.4+ca58154a7d fabric-renderer-registries-v1: Fabric Renderer Registries (v1) 2.3.0+2868a2287d fabric-rendering-data-attachment-v1: Fabric Rendering Data Attachment (v1) 0.1.5+ca58154a7d fabric-rendering-fluids-v1: Fabric Rendering Fluids (v1) 0.1.13+ca58154a7d fabric-rendering-v0: Fabric Rendering (v0) 1.1.2+ca58154a7d fabric-rendering-v1: Fabric Rendering (v1) 1.6.0+2868a2287d fabric-resource-loader-v0: Fabric Resource Loader (v0) 0.4.6+2868a2287d fabric-screen-api-v1: Fabric Screen API (v1) 1.0.0+c045166c7d fabric-screen-handler-api-v1: Fabric Screen Handler API (v1) 1.1.5+9354966b7d fabric-structure-api-v1: Fabric Structure API (v1) 1.1.4+ca58154a7d fabric-tag-extensions-v0: Fabric Tag Extensions (v0) 1.1.1+ca58154a7d fabric-textures-v0: Fabric Textures (v0) 1.0.6+ca58154a7d fabric-tool-attribute-api-v1: Fabric Tool Attribute API (v1) 1.2.7+8183d3957d fabricloader: Fabric Loader 0.11.3 java: Java HotSpot(TM) 64-Bit Server VM 8 minecraft: Minecraft 1.16.5 mubble: Mubble 4.0-pre9 terraform-shapes-api-v1: Terraform Shapes API (v1) 1.0.4 terraform-tree-api-v1: Terraform Tree API (v1) 1.0.5 trinkets: Trinkets 2.6.7 Launched Version: fabric-loader-0.11.3-1.16.5 Backend library: LWJGL version 3.2.2 build 10 Backend API: NO CONTEXT GL Caps: Using VBOs: Yes Is Modded: Definitely; Client brand changed to 'fabric' Type: Client (map_client.txt) CPU: <unknown>

We will soon update Mubble to 1.17 for a stable release. Sorry for the inconvenience.