This is the crash-report:

---- Minecraft Crash Report -------- Minecraft Crash Report ----// Shall we play a game?
Time: 6/3/18 11:55 AMDescription: Initializing game
java.lang.NullPointerException: Initializing game at bib.a(SourceFile:784) at bib.av(SourceFile:662) at bib.aq(SourceFile:456) at bib.a(SourceFile:404) 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 bib.a(SourceFile:784) at bib.av(SourceFile:662) at bib.aq(SourceFile:456)
– Initialization --Details:Stacktrace: at bib.a(SourceFile:404) at net.minecraft.client.main.Main.main(SourceFile:123)
– System Details --Details: Minecraft Version: 1.12.2 Operating System: Windows 7 (amd64) version 6.1 Java Version: 1.8.0_25, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 161056480 bytes (153 MB) / 234881024 bytes (224 MB) up to 1073741824 bytes (1024 MB) JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0 Launched Version: 1.12.2 LWJGL: 2.9.4 OpenGL: ~_ERROR~ RuntimeException: No OpenGL context found in the current thread. GL Caps:  Using VBOs: Yes Is Modded: Probably not. Jar signature remains and client brand is untouched. Type: Client (map_client.txt) Resource Packs:  Current Language: ~_ERROR~ NullPointerException: null Profiler Position: N/A (disabled) CPU: <unknown>