crash report:

---- Minecraft Crash Report -------- Minecraft Crash Report ----// Everything's going to plan. No, really, that was supposed to happen.
Time: 2018/8/18 上午 9:43Description: Initializing game
java.lang.NullPointerException: Initializing game
at cfi.am(SourceFile:475)
at cfi.a(SourceFile:377)
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 threadStacktrace: at cfi.am(SourceFile:475)
– Initialization --Details:Stacktrace: at cfi.a(SourceFile:377) at net.minecraft.client.main.Main.main(SourceFile:144)
– System Details --Details: Minecraft Version: 1.13 Operating System: Windows 10 (amd64) version 10.0 Java Version: 1.8.0_51, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 400770128 bytes (382 MB) / 1073741824 bytes (1024 MB) up to 2147483648 bytes (2048 MB) JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M Launched Version: 1.13 LWJGL: 3.1.6 build 14 OpenGL: Intel(R) HD Graphics 5500 GL version 4.4.0 - Build 20.19.15.4549, 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: 繁體中文 (台灣) Profiler Position: N/A (disabled) CPU: 4x Intel(R) Core(TM) i5-5200U CPU @ 2.20GHz

What could I do?