my crash report is

---- Minecraft Crash Report ----

WARNING: coremods are present:
TLSkinCapeHookLoader (tlskincape_1.8.9-1.4.jar)
Contact their authors BEFORE contacting forge

// This doesn't make any sense!

Time: 11/24/19 8:52 AM
Description: Batching chunks

java.lang.IndexOutOfBoundsException
at java.nio.Buffer.checkIndex(Unknown Source)
at java.nio.DirectByteBuffer.putFloat(Unknown Source)
at net.minecraft.client.renderer.WorldRenderer.func_181662_b(WorldRenderer.java:437)
at com.github.lunatrius.core.client.renderer.GeometryTessellator.drawQuads(GeometryTessellator.java:113)
at com.github.lunatrius.core.client.renderer.GeometryTessellator.drawQuads(GeometryTessellator.java:108)
at com.github.lunatrius.core.client.renderer.GeometryTessellator.drawCuboid(GeometryTessellator.java:90)
at com.github.lunatrius.core.client.renderer.GeometryTessellator.drawCuboid(GeometryTessellator.java:73)
at com.github.lunatrius.core.client.renderer.GeometryTessellator.drawCuboid(GeometryTessellator.java:69)
at com.github.lunatrius.schematica.client.renderer.chunk.overlay.RenderOverlay.func_178581_b(RenderOverlay.java:136)
at net.minecraft.client.renderer.chunk.ChunkRenderWorker.func_178474_a(SourceFile:78)
at net.minecraft.client.renderer.chunk.ChunkRenderWorker.run(SourceFile:38)
at java.lang.Thread.run(Unknown Source)

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

-- Head --
Stacktrace:
at java.nio.Buffer.checkIndex(Unknown Source)
at java.nio.DirectByteBuffer.putFloat(Unknown Source)
at net.minecraft.client.renderer.WorldRenderer.func_181662_b(WorldRenderer.java:437)
at com.github.lunatrius.core.client.renderer.GeometryTessellator.drawQuads(GeometryTessellator.java:113)
at com.github.lunatrius.core.client.renderer.GeometryTessellator.drawQuads(GeometryTessellator.java:108)
at com.github.lunatrius.core.client.renderer.GeometryTessellator.drawCuboid(GeometryTessellator.java:90)
at com.github.lunatrius.core.client.renderer.GeometryTessellator.drawCuboid(GeometryTessellator.java:73)
at com.github.lunatrius.core.client.renderer.GeometryTessellator.drawCuboid(GeometryTessellator.java:69)

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityPlayerSP['priyanshusah'/84480, l='MpServer', x=22272.14, y=12.00, z=13742.87]]
Chunk stats: MultiplayerChunkCache: 49, 49
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: 500001.00,106.00,5000179.00 - World: (500001,106,5000179), Chunk: (at 1,6,3 in 31250,312511; contains blocks 500000,0,5000176 to 500015,255,5000191), Region: (976,9765; contains chunks 31232,312480 to 31263,312511, blocks 499712,0,4999680 to 500223,255,5000191)
Level time: 207304430 game time, 207315512 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: 2 total; [EntityPlayerSP['priyanshusah'/84480, l='MpServer', x=22272.14, y=12.00, z=13742.87], EntityItem['item.tile.cactus'/99736157, l='MpServer', x=22270.13, y=12.94, z=13748.76]]
Retry entities: 0 total; []
Server brand: Waterfall (git:Waterfall-Bootstrap:1.14-SNAPSHOT:579b700:unknown) <- TacoSpigot
Server type: Non-integrated multiplayer server
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:347)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2536)
at net.minecraft.client.renderer.chunk.ChunkRenderWorker.run(SourceFile:44)
at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
Minecraft Version: 1.8.9
Operating System: Windows 8.1 (amd64) version 6.3
Java Version: 1.8.0_45, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 5490631392 bytes (5236 MB) / 6341787648 bytes (6048 MB) up to 7247757312 bytes (6912 MB)
JVM Flags: 8 total; -Xmn128M -Xmx6904M -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
FML: MCP 9.19 Powered by Forge 11.15.1.2318 6 mods loaded, 6 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHIJA mcp{9.19} [Minecraft Coder Pack] (minecraft.jar)
UCHIJA FML{8.0.99.99} [Forge Mod Loader] (forge-1.8.9-11.15.1.2318-1.8.9.jar)
UCHIJA Forge{11.15.1.2318} [Minecraft Forge] (forge-1.8.9-11.15.1.2318-1.8.9.jar)
UCHIJA LunatriusCore{1.1.2.32} [LunatriusCore] (LunatriusCore-1.8.9-1.1.2.32-universal (1).jar)
UCHIJA Schematica{1.7.7.143} [Schematica] (Schematica-1.8.9-1.7.7.143-universal (1).jar)
UCHIJA tlauncher_custom_cape_skin{1.4} [TLSkinCape] (tlskincape_1.8.9-1.4.jar)
Loaded coremods (and transformers):
TLSkinCapeHookLoader (tlskincape_1.8.9-1.4.jar)
gloomyfolken.hooklib.minecraft.PrimaryClassTransformer
GL info: ERROR RuntimeException: No OpenGL context found in the current thread.
Launched Version: Forge 1.8.9
LWJGL: 2.9.4
OpenGL: ERROR RuntimeException: No OpenGL context found in the current thread.
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: No
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: 
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 4x Intel(R) Core(TM) i5-7400 CPU @ 3.00GHz

Actually buying minecraft would be a good start.