Minecraft Crash Report

[Amoura]

I've been trying to run Sevtech: Ages and whenever I start it, it gives me this error and crash report.
I tried to run Sevtech: Ages of the Sky and it also gives me this error it has to do with something going wrong with betweenlands?

 

---- Minecraft Crash Report ----

WARNING: coremods are present:
  Inventory Tweaks Coremod (InventoryTweaks-1.64+dev.151.jar)
  FarseekCoreMod (Farseek-1.12-2.5.jar)
  MicdoodlePlugin (MicdoodleCore-1.12.2-4.0.2.236.jar)
  CorePlugin (SmoothFont-mc1.12.2-2.1.2.jar)
  MekanismCoremod (Mekanism-1.12.2-9.8.3.390.jar)
  ForgelinPlugin (Forgelin-1.8.2.jar)
  CTMCorePlugin (CTM-MC1.12.2-0.3.3.22.jar)
  LoadingPlugin (BetterWithLib-1.12-1.5.jar)
  BNBGamingCore (BNBGamingCore-1.12.2-0.12.0.jar)
  BetterFoliageLoader (BetterFoliage-MC1.12-2.3.1.jar)
  SevPatches (sevpatches-1.5-6.jar)
  Do not report to Forge! (If you haven't disabled the FoamFix coremod, try disabling it in the config! Note that this bit of text will still appear.) (foamfix-0.10.10-1.12.2.jar)
  RandomPatches (randompatches-1.12.2-1.22.0.0.jar)
  JustEnoughIDs Extension Plugin (JustEnoughIDs-1.0.3-55.jar)
  LoadingPlugin (ResourceLoader-MC1.12.1-1.5.3.jar)
  IvToolkit (IvToolkit-1.3.3-1.12.jar)
  CoreMod (Aroma1997Core-1.12.2-2.0.0.2.jar)
  Quark Plugin (Quark-r1.5-158.jar)
  AstralCore (astralsorcery-1.12.2-1.10.21.jar)
Contact their authors BEFORE contacting forge

// This doesn't make any sense!

Time: 3/21/21 6:09 PM
Description: There was a severe problem during mod loading that has caused the game to fail

net.minecraftforge.fml.common.LoaderException: thebetweenlands Failed to load new mod instance.
    at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:604)
    at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
    at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
    at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
    at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
    at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
    at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
    at com.google.common.eventbus.EventBus.post(EventBus.java:217)
    at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:219)
    at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:197)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
    at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
    at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
    at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
    at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
    at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
    at com.google.common.eventbus.EventBus.post(EventBus.java:217)
    at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:136)
    at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:595)
    at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:232)
    at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:467)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:378)
    at net.minecraft.client.main.Main.main(SourceFile:123)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at net.minecraftforge.fml.common.ILanguageAdapter$JavaAdapter.getNewInstance(ILanguageAdapter.java:187)
    at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:599)
    ... 35 more
Caused by: java.lang.NoClassDefFoundError: thebetweenlands/core/TheBetweenlandsPreconditions
    at thebetweenlands.common.TheBetweenlands.createInstance(TheBetweenlands.java:157)
    ... 41 more
Caused by: java.lang.ClassNotFoundException: thebetweenlands.core.TheBetweenlandsPreconditions
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 42 more
Caused by: java.lang.NullPointerException

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

-- System Details --
Details:
    Minecraft Version: 1.12.2
    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: 365982672 bytes (349 MB) / 1073741824 bytes (1024 MB) up to 5368709120 bytes (5120 MB)
    JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx5G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    FML: MCP 9.42 Powered by Forge 14.23.5.2854 272 mods loaded, 272 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

Edited March 21, 2021 by Amoura
Clarification