我滴妈呀，我这个正版还不如用自己的启动器启动的方便！！！！！能不能帮忙看一下？？？、谢谢大佬们！！！！！！！！！

正版装完forge就成这个样了，以前的时候自己装forge，打MOD啥的啥事没有，前些日子出来个一个未知错误导致游戏崩溃，之后就成这个熊样了，啥招都试了，有没有别的招？？？？？

点击查看崩溃报告，然后把内容发给我

怀疑是库文件下载不完整导致的，建议找一个相同版本的整合包然后把libraries复制进去替换原来的，再尝试启动游戏

不建议使用官方启动器启动整合包、Forge端，建议使用HMCL或MultiMC进行正版登录并启动游戏
至于你遇到的崩溃，请补发根目录下的crash-reports中的最新文件以及logs文件夹下的least.log

文件不完整吧

---- Minecraft Crash Report ----

WARNING: coremods are present:
Contact their authors BEFORE contacting forge

// Ouch. That hurt :(

Time: 6/16/19 12:43 AM
Description: Initializing game

java.lang.NoClassDefFoundError: cdd
        at net.minecraft.client.renderer.texture.TextureUtil.<clinit>(TextureUtil.java:26)
        at net.minecraft.client.shader.Framebuffer.func_147605_b(Framebuffer.java:105)
        at net.minecraft.client.shader.Framebuffer.func_147613_a(Framebuffer.java:57)
        at net.minecraft.client.shader.Framebuffer.<init>(Framebuffer.java:38)
        at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:460)
        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.ClassNotFoundException: cdd
        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)
        ... 13 more
Caused by: java.lang.NullPointerException
        at org.objectweb.asm.ClassReader.<init>(Unknown Source)
        at shadersmod.transform.STTextureAbstract.transform(STTextureAbstract.java:21)
        at shadersmod.transform.SMCClassTransformer.transform(SMCClassTransformer.java:116)
        at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)
        at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)
        ... 15 more


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

-- Head --
Thread: Client thread
Stacktrace:
        at net.minecraft.client.renderer.texture.TextureUtil.<clinit>(TextureUtil.java:26)
        at net.minecraft.client.shader.Framebuffer.func_147605_b(Framebuffer.java:105)
        at net.minecraft.client.shader.Framebuffer.func_147613_a(Framebuffer.java:57)
        at net.minecraft.client.shader.Framebuffer.<init>(Framebuffer.java:38)
        at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:460)

-- Initialization --
Details:
Stacktrace:
        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)

-- System Details --
Details:
        Minecraft Version: 1.12.2
        Operating System: Windows 7 (amd64) version 6.1
        Java Version: 1.8.0_51, Oracle Corporation
        Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
        Memory: 516296728 bytes (492 MB) / 805306368 bytes (768 MB) up to 2147483648 bytes (2048 MB)
        JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G -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:
        Loaded coremods (and transformers):
        Launched Version: 1.12.2-forge1.12.2-14.23.5.2838
        LWJGL: 2.9.4
        OpenGL: GeForce GTX 750 Ti/PCIe/SSE2 GL version 4.6.0 NVIDIA 430.39, 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: vanilla
        Current Language: ~~ERROR~~ NullPointerException: null
        Profiler Position: N/A (disabled)
        CPU: 4x Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz

似乎是缺失了部分文件，尝试重新或者用hmcl下载安装