WHAT?S THE PROBLEM?
[19:51:34] [main/ERROR] [LaunchWrapper]: Unable to launch
1213java.lang.reflect.InvocationTargetException: null
1214at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_292]
1215at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_292]
1216at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_292]
1217at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_292]
1218at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
1219at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
1220at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_292]
1221at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_292]
1222at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_292]
1223at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_292]
1224at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:118) [server.jar:48ec0a1]
1225at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:67) [server.jar:48ec0a1]
1226Caused by: java.lang.NoClassDefFoundError: net/minecraft/world/gen/feature/WorldGenBigTree
1227at net.minecraft.block.Block.func_149671_p(Block.java:2371) ~[aow.class:?]
1228at net.minecraft.init.Bootstrap.func_151354_b(Bootstrap.java:772) ~[ni.class:?]
1229at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1661) ~[MinecraftServer.class:?]
1230... 12 more
1231Caused by: java.lang.ClassNotFoundException: net.minecraft.world.gen.feature.WorldGenBigTree
1232at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) ~[launchwrapper-1.12.jar:?]
1233at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_292]
1234at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_292]
1235at net.minecraft.block.Block.func_149671_p(Block.java:2371) ~[aow.class:?]
1236at net.minecraft.init.Bootstrap.func_151354_b(Bootstrap.java:772) ~[ni.class:?]
1237at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1661) ~[MinecraftServer.class:?]
1238... 12 more
1239Caused by: net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerException: Exception in class transformer thedarkcolour.futuremc.asm.CoreTransformer@2ca54da9 from coremod FutureMC
1240at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:260) ~[server.jar:48ec0a1]
1241at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279) ~[launchwrapper-1.12.jar:?]
1242at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176) ~[launchwrapper-1.12.jar:?]
1243at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_292]
1244at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_292]
1245at net.minecraft.block.Block.func_149671_p(Block.java:2371) ~[aow.class:?]
1246at net.minecraft.init.Bootstrap.func_151354_b(Bootstrap.java:772) ~[ni.class:?]
1247at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1661) ~[MinecraftServer.class:?]
1248... 12 more
1249Caused by: java.lang.RuntimeException: Could not find matching instruction in bytecode
1250at thedarkcolour.futuremc.asm.CoreTransformer.findInsn(CoreTransformer.java:294) ~[future-mc-1.12.2-0.2.4.0.jar:?]
1251at thedarkcolour.futuremc.asm.CoreTransformer.patchBeforeInsn(CoreTransformer.java:249) ~[future-mc-1.12.2-0.2.4.0.jar:?]
1252at thedarkcolour.futuremc.asm.CoreTransformer.patchBeforeReturnTrue(CoreTransformer.java:200) ~[future-mc-1.12.2-0.2.4.0.jar:?]
1253at thedarkcolour.futuremc.asm.CoreTransformer.patchWorldGenBigTree(CoreTransformer.java:114) ~[future-mc-1.12.2-0.2.4.0.jar:?]
1254at thedarkcolour.futuremc.asm.CoreTransformer.transform(CoreTransformer.java:36) ~[future-mc-1.12.2-0.2.4.0.jar:?]
1255at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:256) ~[server.jar:48ec0a1]
1256at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279) ~[launchwrapper-1.12.jar:?]
1257at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176) ~[launchwrapper-1.12.jar:?]
1258at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_292]
1259at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_292]
1260at net.minecraft.block.Block.func_149671_p(Block.java:2371) ~[aow.class:?]
1261at net.minecraft.init.Bootstrap.func_151354_b(Bootstrap.java:772) ~[ni.class:?]
1262at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1661) ~[MinecraftServer.class:?]
1263... 12 more