The game keeps crashing i dont know why PLEASE HELP!

---- Minecraft Crash Report -------- Minecraft Crash Report ----// Don't be sad. I'll do better next time, I promise!
Time: 4/24/19 9:03 AMDescription: Unexpected error
java.lang.NullPointerException: Unexpected error at bsa.n(SourceFile:296) at bsa.e(SourceFile:275) at bib.t(SourceFile:1602) at bib.az(SourceFile:1000) at bib.a(SourceFile:419) at net.minecraft.client.main.Main.main(SourceFile:123)

A detailed walkthrough of the error, its code path and all known details is as follows:---------------------------------------------------------------------------------------
– Head --Thread: Client threadStacktrace: at bsa.n(SourceFile:296) at bsa.e(SourceFile:275)
– Affected level --Details: Level name: MpServer All players: 0 total; [] Chunk stats: MultiplayerChunkCache: 0, 0 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: 0 game time, 0 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: adventure (ID 2). Hardcore: false. Cheats: false Forced entities: 0 total; [] Retry entities: 0 total; [] Server brand: ~_ERROR~ NullPointerException: null Server type: Non-integrated multiplayer serverStacktrace: at bsb.a(SourceFile:366) at bib.b(SourceFile:2587) at bib.a(SourceFile:433) at net.minecraft.client.main.Main.main(SourceFile:123)
– System Details --Details: Minecraft Version: 1.12.2 Operating System: Windows 10 (amd64) version 10.0 Java Version: 1.8.0_191, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 140486016 bytes (133 MB) / 238632960 bytes (227 MB) up to 1060372480 bytes (1011 MB) JVM Flags: 6 total; -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0 Launched Version: 1.12.2 LWJGL: 2.9.4 OpenGL: Radeon(TM) RX 460 Graphics GL version 4.5.13521 Compatibility Profile Context 24.20.11021.1000, ATI Technologies Inc. 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: vanilla Current Language: English (US) Profiler Position: N/A (disabled) CPU: 6x AMD FX(tm)-6300 Six-Core Processor