---- Minecraft Crash Report ----

WARNING: coremods are present:
  LogfileConservationMod_Core ((1.12.2) LogfileConservationMod-4.3.jar)
Contact their authors BEFORE contacting forge

// Don't do that.

Time: 19-1-6 下午10:26
Description: Initializing game

java.lang.NoClassDefFoundError: cer
	at java.lang.Class.getDeclaredFields0(Native Method)
	at java.lang.Class.privateGetDeclaredFields(Unknown Source)
	at java.lang.Class.getField0(Unknown Source)
	at java.lang.Class.getField(Unknown Source)
	at net.minecraftforge.fml.client.FMLClientHandler.detectOptifine(FMLClientHandler.java:277)
	at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:191)
	at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:417)
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:329)
	at net.minecraft.client.main.Main.main(SourceFile:124)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.ClassNotFoundException: cer
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 15 more
Caused by: java.lang.NullPointerException
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
	... 17 more


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

-- Head --
Stacktrace:
	at java.lang.Class.getDeclaredFields0(Native Method)
	at java.lang.Class.privateGetDeclaredFields(Unknown Source)
	at java.lang.Class.getField0(Unknown Source)
	at java.lang.Class.getField(Unknown Source)
	at net.minecraftforge.fml.client.FMLClientHandler.detectOptifine(FMLClientHandler.java:277)
	at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:191)
	at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:417)

-- Initialization --
Details:
Stacktrace:
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:329)
	at net.minecraft.client.main.Main.main(SourceFile:124)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
	Minecraft Version: 1.8.9
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_192, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 31185480 bytes (29 MB) / 285212672 bytes (272 MB) up to 2147483648 bytes (2048 MB)
	JVM Flags: 11 total; -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M -XX:-UseAdaptiveSizePolicy -XX:-OmitStackTraceInFastThrow -Xmn128m -Xmx2048m -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	FML:
	Loaded coremods (and transformers):
LogfileConservationMod_Core ((1.12.2) LogfileConservationMod-4.3.jar)

	Launched Version: 1.8.9
	LWJGL: 2.9.4
	OpenGL: GeForce GTX 960M/PCIe/SSE2 GL version 4.6.0 NVIDIA 417.35, NVIDIA Corporation
	GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

	Using VBOs: Yes
	Is Modded: Definitely; Client brand changed to 'fml,forge'
	Type: Client (map_client.txt)
	Resource Packs:
	Current Language: ~~ERROR~~ NullPointerException: null
	Profiler Position: N/A (disabled)
	CPU: 4x Intel(R) Core(TM) i5-6300HQ CPU @ 2.30GHz