Related to [1.14] Client crashes on startup #36

I am using MultiMC 1.4.13 with fabric. This is the only mod.

[17:04:56] [main/INFO]: Loading for game Minecraft 1.14.3
[17:04:56] [main/WARN]: Mod appleskin (1.0.6) uses 'requires' key in fabric.mod.json, which is not supported - use 'depends'
[17:04:56] [main/INFO]: [FabricLoader] Loading 2 mods: [email protected]+build.158, [email protected]
[17:04:56] [main/INFO]: Compatibility level set to JAVA_8
[17:04:56] [main/WARN]: Mixin config appleskin.mixins.json does not specify "minVersion" property
---- Minecraft Crash Report ----
// Surprise! Haha. Well, this is awkward.

Time: 7/26/19 5:04 PM
Description: Initializing game

java.lang.RuntimeException: Could not execute entrypoint stage 'client' due to errors!
at net.fabricmc.loader.entrypoint.hooks.EntrypointUtils.logErrors(EntrypointUtils.java:45)
at net.fabricmc.loader.entrypoint.hooks.EntrypointClient.start(EntrypointClient.java:35)
at net.minecraft.class_310.method_1503(class_310.java)
at net.minecraft.class_310.method_1514(class_310.java:395)
at net.minecraft.client.main.Main.main(Main.java:154)
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:498)
at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:170)
at net.fabricmc.loader.launch.knot.Knot.init(Knot.java:129)
at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:26)
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:498)
at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:196)
at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:231)
at org.multimc.EntryPoint.listen(EntryPoint.java:143)
at org.multimc.EntryPoint.main(EntryPoint.java:34)
Suppressed: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/network/ClientSidePacketRegistry
at squeek.appleskin.network.SyncHandler.init(SyncHandler.java:26)
at squeek.appleskin.AppleSkin.onInitializeClient(AppleSkin.java:11)
at net.fabricmc.loader.entrypoint.hooks.EntrypointUtils.lambda$logErrors$0(EntrypointUtils.java:38)
at java.util.ArrayList.forEach(ArrayList.java:1257)
at net.fabricmc.loader.entrypoint.hooks.EntrypointUtils.logErrors(EntrypointUtils.java:36)
... 19 more
Caused by: java.lang.ClassNotFoundException: net.fabricmc.fabric.api.network.ClientSidePacketRegistry
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at net.fabricmc.loader.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:160)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 24 more

A detailed walkthrough of the error, its code path and all known details is as follows:

-- Head --
Thread: Client thread
Stacktrace:
at net.fabricmc.loader.entrypoint.hooks.EntrypointUtils.logErrors(EntrypointUtils.java:45)
at net.fabricmc.loader.entrypoint.hooks.EntrypointClient.start(EntrypointClient.java:35)
at net.minecraft.class_310.method_1503(class_310.java)

-- Initialization --
Details:
Stacktrace:
at net.minecraft.class_310.method_1514(class_310.java:395)
at net.minecraft.client.main.Main.main(Main.java:154)
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:498)
at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:170)
at net.fabricmc.loader.launch.knot.Knot.init(Knot.java:129)
at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:26)
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:498)
at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:196)
at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:231)
at org.multimc.EntryPoint.listen(EntryPoint.java:143)
at org.multimc.EntryPoint.main(EntryPoint.java:34)

I didn't realize that i need to instal FabricApi mod at the top of MultiMC fabric isntall :) Sorry for trouble, amazing mod!