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Here's the crash report:

---- Minecraft Crash Report ----
// I blame Dinnerbone.

Time: 15/12/18 2:15 PM
Description: Unexpected error

java.lang.NullPointerException: Unexpected error
at net.minecraft.client.network.NetHandlerPlayClient.func_147282_a(NetHandlerPlayClient.java:243)
at net.minecraft.network.play.server.S01PacketJoinGame.func_148833_a(SourceFile:70)
at net.minecraft.network.play.server.S01PacketJoinGame.func_148833_a(SourceFile:13)
at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:2061)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:973)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898)
at net.minecraft.client.main.Main.main(SourceFile:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

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

-- Head --
Stacktrace:
at net.minecraft.client.network.NetHandlerPlayClient.func_147282_a(NetHandlerPlayClient.java:243)
at net.minecraft.network.play.server.S01PacketJoinGame.func_148833_a(SourceFile:70)
at net.minecraft.network.play.server.S01PacketJoinGame.func_148833_a(SourceFile:13)
at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212)

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityClientPlayerMP['Jessicaksch'/6754, l='', x=0.50, y=66.62, z=0.50]]
Chunk stats: MultiplayerChunkCache: 0, 0
Level seed: 0
Level generator: ID 04 - BIOMESOP, 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: survival (ID 0). Hardcore: false. Cheats: false
Forced entities: 1 total; [EntityClientPlayerMP['Jessicaksch'/6754, l='', x=0.50, y=66.62, z=0.50]]
Retry entities: 0 total; []
Server brand: ~~ERROR~~ NullPointerException: null
Server type: Integrated singleplayer server
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:425)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2444)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:927)
at net.minecraft.client.main.Main.main(SourceFile:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.7.10
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: 736419976 bytes (702 MB) / 1845493760 bytes (1760 MB) up to 8589934592 bytes (8192 MB)
JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx8G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 26, tcache: 0, allocated: 13, tallocated: 96
FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1614 Optifine OptiFine_1.7.10_HD_U_E7 73 mods loaded, 73 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHIJAAAA mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)
UCHIJAAAA FML{7.10.99.99} [Forge Mod Loader] (forge-1.7.10-10.13.4.1614-1.7.10.jar)
UCHIJAAAA Forge{10.13.4.1614} [Minecraft Forge] (forge-1.7.10-10.13.4.1614-1.7.10.jar)
UCHIJAAAA CodeChickenCore{1.0.7.47} [CodeChicken Core] (minecraft.jar)
UCHIJAAAA ivtoolkit{1.2.1} [IvToolkit] (minecraft.jar)
UCHIJAAAA NotEnoughItems{1.0.5.120} [Not Enough Items] (NotEnoughItems-1.7.10-1.0.5.120-universal.jar)
UCHIJAAAA mod_ThreadedLighting{1.7.10-1.0} [Threaded Lighting] (minecraft.jar)
UCHIJAAAA psychedelicraftcore{1.4} [Psychedelicraft Core] (minecraft.jar)
UCHIJAAAA gilded-games-util{1.7.10-1.1} [Gilded Games Utility] (gilded-games-util-1.7.10-1.7.jar)
UCHIJAAAA bspkrsCore{6.16} [bspkrsCore] ([1.7.10]bspkrsCore-universal-6.16.jar)
UCHIJAAAA Treecapitator{1.7.10} [Treecapitator] ([1.7.10]Treecapitator-universal-2.0.4.jar)
UCHIJAAAA Baubles{1.0.1.10} [Baubles] (Baubles-1.7.10-1.0.1.10.jar)
UCHIJAAAA adventurebackpack{1.7.10-0.8b} [Adventure Backpack] (adventurebackpack-1.7.10-0.8b - Copy.jar)
UCHIJAAAA aether{1.7.10-1.5.1} [Aether II] (aether-1.7.10-1.5.1.jar)
UCHIJAAAA AnimationAPI{1.2.4} [AnimationAPI] (AnimationAPI-1.7.10-1.2.4.jar)
UCHIJAAAA Aquaculture{1.2.6} [Aquaculture] (Aquaculture-1.7.10-1.2.6.21.jar)
UCHIJAAAA thehunt{Pre-Alpha} [The Hunt] (Arkif - The Hunt [1.7.10] [v0.3].jar)
UCHIJAAAA Artifacts{1.1.3} [Artifacts] (Artifacts-1.1.3.jar)
UCHIJAAAA BetterFoliage{1.0.15} [Better Foliage] (BetterFoliage-mc1.7-1.0.15.jar)
UCHIJAAAA BiomesOPlenty{2.1.0} [Biomes O' Plenty] (BiomesOPlenty-1.7.10-2.1.0.1396-universal.jar)
UCHIJAAAA birdsnests{1.4} [Bird's Nests] (BirdsNests1.7.10-1.4.jar)
UCHIJAAAA butterflymania{1.0.1} [Butterfly Mania] (Butterfly-Mania-Mod-1.7.10.jar)
UCHIJAAAA CosmeticArmor{1.0.5} [Cosmetic Armor] (CosmeticArmor-1.7.10-1.0.5.B8-universal.jar)
UCHIJAAAA CustomSpawner{3.3.0} [DrZhark's CustomSpawner] (CustomMobSpawner 3.3.0.zip)
UCHIJAAAA customnpcs{1.7.10d} [CustomNpcs] (CustomNPCs_1.7.10d(29oct17).jar)
UCHIJAAAA doggytalents{1.14.2.317} [Doggy Talents] (DoggyTalents-1.7.10-1.14.2.317-universal.jar)
UCHIJAAAA MoCreatures{6.3.1} [DrZhark's Mo'Creatures Mod] (DrZharks MoCreatures Mod v6.3.1.zip)
UCHIJAAAA DynamicLights{1.3.8} [Dynamic Lights] (DynamicLights-1.7.10.jar)
UCHIJAAAA DynamicLights_onFire{1.0.4} [Dynamic Lights Burning Entity Module] (DynamicLights-1.7.10.jar)
UCHIJAAAA DynamicLights_creepers{1.0.4} [Dynamic Lights Creeper Module] (DynamicLights-1.7.10.jar)
UCHIJAAAA DynamicLights_dropItems{1.0.8} [Dynamic Lights EntityItem Module] (DynamicLights-1.7.10.jar)
UCHIJAAAA DynamicLights_entityClasses{1.0.1} [Dynamic Lights Entity Light Module] (DynamicLights-1.7.10.jar)
UCHIJAAAA DynamicLights_mobEquipment{1.0.8} [Dynamic Lights Mob Equipment Light Module] (DynamicLights-1.7.10.jar)
UCHIJAAAA DynamicLights_flameArrows{1.0.0} [Dynamic Lights Fiery Arrows Light Module] (DynamicLights-1.7.10.jar)
UCHIJAAAA DynamicLights_floodLights{1.0.2} [Dynamic Lights Flood Light] (DynamicLights-1.7.10.jar)
UCHIJAAAA DynamicLights_otherPlayers{1.0.8} [Dynamic Lights OtherPlayers Light Module] (DynamicLights-1.7.10.jar)
UCHIJAAAA DynamicLights_thePlayer{1.1.4} [Dynamic Lights Player Light Module] (DynamicLights-1.7.10.jar)
UCHIJAAAA dsurround{1.0.6.3} [Dynamic Surroundings] (DynamicSurroundings-1.7.10-1.0.6.3.jar)
UCHIJAAAA eplus{3.0.2-d} [Enchanting Plus] (EnchantingPlus-1.7.10-3.0.2-d.jar)
UCHIJAAAA exoticbirds{1.0} [Exotic Birds] (Exotic+Birds+1.7.10-1.4.6.jar)
UCHIJAAAA fantastic{1.0.0} [Fantastic Fish] (fantastic-1.4.jar)
UCHIJAAAA GrimoireOfGaia{1.0.0} [Grimoire of Gaia 3] (GrimoireOfGaia3-1.7.10-1.2.7.jar)
UCHIJAAAA iChunUtil{4.2.3} [iChunUtil] (iChunUtil-4.2.3.jar)
UCHIJAAAA LostBooks{1.2.2} [Lost Books] (LostBooks-1.7.10-1.2.2.jar)
UCHIJAAAA lycanitesmobs{1.13.0.5 - MC 1.7.10} [Lycanites Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UCHIJAAAA arcticmobs{1.13.0.5 - MC 1.7.10} [Lycanites Arctic Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UCHIJAAAA demonmobs{1.13.0.5 - MC 1.7.10} [Lycanites Demon Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UCHIJAAAA desertmobs{1.13.0.5 - MC 1.7.10} [Lycanites Desert Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UCHIJAAAA forestmobs{1.13.0.5 - MC 1.7.10} [Lycanites Forest Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UCHIJAAAA freshwatermobs{1.13.0.5 - MC 1.7.10} [Lycanites Freshwater Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UCHIJAAAA infernomobs{1.13.0.5 - MC 1.7.10} [Lycanites Inferno Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UCHIJAAAA junglemobs{1.13.0.5 - MC 1.7.10} [Lycanites Jungle Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UCHIJAAAA mountainmobs{1.13.0.5 - MC 1.7.10} [Lycanites Mountain Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UCHIJAAAA plainsmobs{1.13.0.5 - MC 1.7.10} [Lycanites Plains Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UCHIJAAAA saltwatermobs{1.13.0.5 - MC 1.7.10} [Lycanites Saltwater Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UCHIJAAAA shadowmobs{1.13.0.5 - MC 1.7.10} [Lycanites Shadow Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UCHIJAAAA swampmobs{1.13.0.5 - MC 1.7.10} [Lycanites Swamp Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UCHIJAAAA Mantle{1.7.10-0.3.2.jenkins191} [Mantle] (Mantle-1.7.10-0.3.2b.jar)
UCHIJAAAA RadixCore{2.1.3} [RadixCore] (RadixCore-1.7.10-2.1.3-universal.jar)
UCHIJAAAA MCA{1.7.10-5.2.2} [Minecraft Comes Alive] (MCA-1.7.10-5.2.2-universal.jar)
UCHIJAAAA MobAmputation{4.0.1} [MobAmputation] (MobAmputation-4.0.1.jar)
UCHIJAAAA MobDismemberment{4.0.0} [MobDismemberment] (MobDismemberment-4.0.0.jar)
UCHIJAAAA cfm{3.4.8} [§9MrCrayfish's Furniture Mod] (MrCrayfishFurnitureModv3.4.8(1.7.10).jar)
UCHIJAAAA harvestcraft{1.7.10j} [Pam's HarvestCraft] (Pam's HarvestCraft 1.7.10j.jar)
UCHIJAAAA psychedelicraft{1.5.2} [Psychedelicraft] (Psychedelicraft-1.5.2.jar)
UCHIJAAAA realtimeclock{1.7.10-0.1} [Real Time Clock] (RealTimeClock-1.7.10-0.2.jar)
UCHIJAAAA reccomplex{0.9.7.1.1} [Recurrent Complex] (RecurrentComplex-0.9.7.1.1.jar)
UCHIJAAAA globbypotato_rockhounding{4.14} [Rockhounding Mod] (Rockhounding-Mod-1.7.10.jar)
UCHIJAAAA TConstruct{1.7.10-1.8.8.build988} [Tinkers' Construct] (TConstruct-1.7.10-1.8.8.jar)
UCHIJAAAA TwilightForest{2.3.7} [The Twilight Forest] (twilightforest-1.7.10-2.3.7.jar)
UCHIJAAAA ultimate_unicorn_mod{1.5.16} [Wings, Horns, and Hooves, the Ultimate Unicorn Mod!] (ultimate_unicorn_mod-1.7.10-1.5.16.jar)
UCHIJAAAA XaeroMinimap{1.15.3} [Xaero's Minimap] (Xaeros_Minimap_1.15.3_Forge_1.7.10.jar)
UCHIJAAAA XaeroWorldMap{1.2.5} [Xaero's World Map] (XaerosWorldMap_1.2.5_Forge_1.7.10.jar)
GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.6.0 NVIDIA 417.01' Renderer: 'GeForce GTX 1060 6GB/PCIe/SSE2'
Mantle Environment: DO NOT REPORT THIS CRASH! Unsupported mods in environment: optifine
TConstruct Environment: Environment healthy.
Launched Version: 1.7.10-Forge10.13.4.1614-1.7.10
LWJGL: 2.9.1
OpenGL: GeForce GTX 1060 6GB/PCIe/SSE2 GL version 4.6.0 NVIDIA 417.01, NVIDIA Corporation
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: [Conquest_.zip]
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Anisotropic Filtering: Off (1)
OptiFine Version: OptiFine_1.7.10_HD_U_E7
Render Distance Chunks: 10
Mipmaps: 4
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
Shaders: Sildurs Vibrant Shaders v1.164 Medium.zip
OpenGlVersion: 4.6.0 NVIDIA 417.01
OpenGlRenderer: GeForce GTX 1060 6GB/PCIe/SSE2
OpenGlVendor: NVIDIA Corporation
CpuCount: 4