The game crashed whilst unexpected error Error: java.lang.NullPointerException: Unexpected error

Please help.

crash log

---- Minecraft Crash Report ----
// There are four lights!

Time: 1/10/19 3:10 PM
Description: Unexpected error

java.lang.NullPointerException: Unexpected error
    at cfi.a(SourceFile:60)
    at cfi.a(SourceFile:72)
    at ctx.a(SourceFile:59)
    at cty.b(SourceFile:889)
    at cty.a(SourceFile:875)
    at cty.a(SourceFile:749)
    at cft.c(SourceFile:850)
    at cft.a(SourceFile:395)
    at net.minecraft.client.main.Main.main(SourceFile:144)

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

-- Head --
Thread: Client thread
Stacktrace:
    at cfi.a(SourceFile:60)
    at cfi.a(SourceFile:72)
    at ctx.a(SourceFile:59)
    at cty.b(SourceFile:889)
    at cty.a(SourceFile:875)

-- Affected level --
Details:
    Level name: MpServer
    All players: 0 total; []
    Chunk stats: MultiplayerChunkCache: 169, 169
    Level seed: 0
    Level generator: ID 01 - flat, ver 0. Features enabled: false
    Level generator options: {}
    Level spawn location: World: (8,64,8), Chunk: (at 8,4,8 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
    Level time: 226853420 game time, 389000 day time
    Level dimension: 0
    Level storage version: 0x00000 - Unknown?
    Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
    Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
    Forced entities: 0 total; []
    Retry entities: 0 total; []
    Server brand: ~~ERROR~~ NullPointerException: null
    Server type: Non-integrated multiplayer server
Stacktrace:
    at crg.a(SourceFile:418)
    at cft.b(SourceFile:1815)
    at cft.a(SourceFile:408)
    at net.minecraft.client.main.Main.main(SourceFile:144)

-- System Details --
Details:
    Minecraft Version: 1.13.2
    Operating System: Windows 10 (x86) version 10.0
    Java Version: 1.8.0_51, Oracle Corporation
    Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
    Memory: 323797712 bytes (308 MB) / 738197504 bytes (704 MB) up to 1073741824 bytes (1024 MB)
    JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx1G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
    Launched Version: 1.13.2
    LWJGL: 3.1.6 build 14
    OpenGL: Intel(R) HD Graphics 2000 GL version 3.1.0 - Build 9.17.10.4459, Intel
    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: Probably not. Jar signature remains and client brand is untouched.
    Type: Client (map_client.txt)
    Resource Packs: 
    Current Language: English (US)
    Profiler Position: N/A (disabled)
    CPU: 8x Intel(R) Core(TM) i7-2600S CPU @ 2.80GHz