java.lang.NoClassDefFoundError : net/fabricmc/fabric/api/event/client/ClientTickCallback error every time I launch with a mod.

[AinP]

So basically every time I launch minecraft with a mod installed it crashes. If I take the mod out it launches fine.

 

I've had the same mod before and I'm pretty sure that the mod isn't what's causing the crash. When I first launch with fabric it loads fine and generates the mod folder and so on but as soon as I put a mod in the mod folder it crashes. 

I assume that It crashes because it is unable fo locate or find like a million classes, but again I really have no clue.

 

I've tried:

     Deleting the .minecraft folder and reinstalling.

     Deleting all versions and reinstalling.

     Updating Java.

     Reinstalling fabric and the mod (multiple times).

 

If someone understands this crashreport, here it is:

 

---- Minecraft Crash Report ----
// My bad.

Time: 2019-08-13 23:34
Description: Initializing game

java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/event/client/ClientTickCallback
    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:155)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    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$NewEntry.create(EntrypointStorage.java:101)
    at net.fabricmc.loader.EntrypointStorage$NewEntry.getOrCreate(EntrypointStorage.java:93)
    at net.fabricmc.loader.EntrypointStorage.getEntrypoints(EntrypointStorage.java:140)
    at net.fabricmc.loader.FabricLoader.getEntrypoints(FabricLoader.java:186)
    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:394)
    at net.minecraft.client.main.Main.main(Main.java:155)
    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:170)
    at net.fabricmc.loader.launch.knot.Knot.init(Knot.java:129)
    at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:26)
Caused by: java.lang.ClassNotFoundException: net.fabricmc.fabric.api.event.client.ClientTickCallback
    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:160)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 23 more

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

-- Head --
Thread: Client thread
Stacktrace:
    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:155)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    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$NewEntry.create(EntrypointStorage.java:101)
    at net.fabricmc.loader.EntrypointStorage$NewEntry.getOrCreate(EntrypointStorage.java:93)
    at net.fabricmc.loader.EntrypointStorage.getEntrypoints(EntrypointStorage.java:140)
    at net.fabricmc.loader.FabricLoader.getEntrypoints(FabricLoader.java:186)
    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:394)
    at net.minecraft.client.main.Main.main(Main.java:155)
    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:170)
    at net.fabricmc.loader.launch.knot.Knot.init(Knot.java:129)
    at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:26)

-- System Details --
Details:
    Minecraft Version: 1.14.4
    Minecraft Version ID: 1.14.4
    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: 532503896 bytes (507 MB) / 1509949440 bytes (1440 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
    Launched Version: fabric-loader-0.4.8+build.159-1.14.4
    LWJGL: 3.2.2 build 10
    OpenGL: NO CONTEXT
    GL Caps: 
    Using VBOs: Yes
    Is Modded: Definitely; Client brand changed to 'fabric'
    Type: Client (map_client.txt)
    Resource Packs: ~~ERROR~~ NullPointerException: null
    Current Language: ~~ERROR~~ NullPointerException: null
    CPU: <unknown>

[DaemonUmbra]

This is the Forge forum, we don't provide Fabric support here.