Client Crash

---- Minecraft Crash Report ----
// Don't be sad. I'll do better next time, I promise!

Time: 7/2/19 9:11 AM
Description: Ticking entity

java.lang.IllegalAccessError: tried to access method vazkii.botania.common.item.equipment.bauble.ItemFlightTiara.shouldPlayerHaveFlight(Lnet/minecraft/entity/player/EntityPlayer;)Z from class alfheim.common.core.handler.EventHandler
	at alfheim.common.core.handler.EventHandler.onPlayerUpdate(EventHandler.kt:362)
	at cpw.mods.fml.common.eventhandler.ASMEventHandler_208_EventHandler_onPlayerUpdate_PlayerTickEvent.invoke(.dynamic)
	at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)
	at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:140)
	at cpw.mods.fml.common.FMLCommonHandler.onPlayerPostTick(FMLCommonHandler.java:350)
	at net.minecraft.entity.player.EntityPlayer.func_70071_h_(EntityPlayer.java:353)
	at net.minecraft.client.entity.EntityClientPlayerMP.func_70071_h_(SourceFile:63)
	at net.minecraft.world.World.func_72866_a(World.java:2070)
	at net.minecraft.world.World.func_72870_g(World.java:2034)
	at net.minecraft.world.World.func_72939_s(World.java:1887)
	at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:2006)
	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(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:196)
	at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:231)
	at org.multimc.EntryPoint.listen(EntryPoint.java:143)
	at org.multimc.EntryPoint.main(EntryPoint.java:34)


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

-- Head --
Stacktrace:
	at alfheim.common.core.handler.EventHandler.onPlayerUpdate(EventHandler.kt:362)
	at cpw.mods.fml.common.eventhandler.ASMEventHandler_208_EventHandler_onPlayerUpdate_PlayerTickEvent.invoke(.dynamic)
	at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)
	at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:140)
	at cpw.mods.fml.common.FMLCommonHandler.onPlayerPostTick(FMLCommonHandler.java:350)
	at net.minecraft.entity.player.EntityPlayer.func_70071_h_(EntityPlayer.java:353)
	at net.minecraft.client.entity.EntityClientPlayerMP.func_70071_h_(SourceFile:63)
	at net.minecraft.world.World.func_72866_a(World.java:2070)
	at net.minecraft.world.World.func_72870_g(World.java:2034)
	at net.minecraft.world.World.func_72939_s(World.java:1887)

-- Entity being ticked --
Details:
	Entity Type: null (net.minecraft.client.entity.EntityClientPlayerMP)
	Entity ID: 452
	Entity Name: Gedeon_Grays
	Entity's Exact location: -1003.35, 78.62, 185.50
	Entity's Block location: World: (-1004,78,185), Chunk: (at 4,4,9 in -63,11; contains blocks -1008,0,176 to -993,255,191), Region: (-2,0; contains chunks -64,0 to -33,31, blocks -1024,0,0 to -513,255,511)
	Entity's Momentum: 0.00, -0.08, 0.00
Stacktrace:
	at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:2006)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [EntityClientPlayerMP['Gedeon_Grays'/452, l='MpServer', x=-1003.35, y=78.62, z=185.50]]
	Chunk stats: MultiplayerChunkCache: 81, 90
	Level seed: 0
	Level generator: ID 00 - default, ver 1. 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: 23655 game time, 23655 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: creative (ID 1). Hardcore: false. Cheats: false
	Forced entities: 38 total; [EntityElf['έλότ'/11416, l='MpServer', x=-1018.06, y=72.00, z=173.47], EntityItem['item.item.pixieDust'/21403, l='MpServer', x=-950.78, y=71.13, z=159.72], EntityElf['έλότ'/16798, l='MpServer', x=-967.38, y=72.00, z=132.66], EntityElf['έλότ'/11807, l='MpServer', x=-1031.28, y=72.00, z=180.41], EntityElf['έλότ'/16799, l='MpServer', x=-959.56, y=72.00, z=134.66], EntityElf['έλότ'/16800, l='MpServer', x=-964.50, y=72.00, z=141.50], EntityElf['έλότ'/16801, l='MpServer', x=-960.50, y=72.00, z=143.50], EntityElf['έλότ'/16803, l='MpServer', x=-1001.91, y=17.00, z=144.28], EntityElf['έλότ'/16804, l='MpServer', x=-1002.50, y=18.00, z=139.50], EntityAlfheimPixie['Οθκρθ'/16807, l='MpServer', x=-1048.01, y=79.06, z=166.27], EntityAlfheimPixie['Οθκρθ'/16808, l='MpServer', x=-968.89, y=75.37, z=210.80], EntityItem['item.item.pixieDust'/19753, l='MpServer', x=-943.34, y=67.13, z=185.66], EntityItem['item.item.pixieDust'/19754, l='MpServer', x=-1055.59, y=71.13, z=143.25], EntityAlfheimPixie['Οθκρθ'/22827, l='MpServer', x=-963.98, y=75.36, z=205.49], EntityAlfheimPixie['Οθκρθ'/22828, l='MpServer', x=-957.97, y=73.14, z=201.91], EntityAlfheimPixie['Οθκρθ'/22829, l='MpServer', x=-959.51, y=74.94, z=210.85], EntityItem['item.item.pixieDust'/17199, l='MpServer', x=-1057.41, y=71.13, z=149.25], EntityCaveSpider['Οεωεπνϋι οΰσκ'/11962, l='MpServer', x=-56.78, y=-4.62, z=29.52], EntityElf['έλότ'/11968, l='MpServer', x=-974.50, y=77.00, z=158.50], EntityAlfheimPixie['Οθκρθ'/5056, l='MpServer', x=-963.33, y=98.02, z=178.49], EntityItem['item.tile.flower1.dandelion'/5963, l='MpServer', x=-1026.69, y=72.13, z=215.81], EntityItem['item.tile.flower1.dandelion'/5964, l='MpServer', x=-1027.16, y=70.13, z=221.22], EntityClientPlayerMP['Gedeon_Grays'/452, l='MpServer', x=-1003.35, y=78.62, z=185.50], EntityItem['item.tile.flower2.allium'/5965, l='MpServer', x=-1027.69, y=70.13, z=222.66], EntityItem['item.tile.flower1.dandelion'/5966, l='MpServer', x=-1025.91, y=73.13, z=212.75], EntityItem['item.tile.flower2.poppy'/5967, l='MpServer', x=-1025.88, y=71.13, z=217.81], EntityItem['item.tile.flower2.poppy'/5968, l='MpServer', x=-1024.28, y=71.13, z=219.59], EntityItem['item.tile.flower1.dandelion'/5969, l='MpServer', x=-1025.44, y=71.13, z=214.56], EntityItem['item.tile.flower1.dandelion'/5970, l='MpServer', x=-1023.84, y=70.13, z=219.19], EntityItem['item.tile.doublePlant.sunflower'/11860, l='MpServer', x=-1059.44, y=75.13, z=215.88], EntityItem['item.tile.blockCustomPlant.0'/11861, l='MpServer', x=-1056.84, y=75.13, z=217.16], EntityElf['έλότ'/11873, l='MpServer', x=-934.50, y=71.00, z=163.50], EntityItem['item.item.pixieDust'/17633, l='MpServer', x=-1060.59, y=72.13, z=153.94], EntityElf['έλότ'/11875, l='MpServer', x=-933.50, y=71.00, z=161.50], EntityElf['έλότ'/11879, l='MpServer', x=-966.44, y=68.23, z=201.06], EntityElf['έλότ'/11881, l='MpServer', x=-980.84, y=74.00, z=215.44], EntityElf['έλότ'/11882, l='MpServer', x=-997.41, y=73.00, z=206.63], EntityElf['έλότ'/11883, l='MpServer', x=-975.56, y=71.00, z=198.56]]
	Retry entities: 0 total; []
	Server brand: fml,forge
	Server type: Integrated singleplayer server
Stacktrace:
	at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2444)
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:919)
	at net.minecraft.client.main.Main.main(SourceFile:148)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:196)
	at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:231)
	at org.multimc.EntryPoint.listen(EntryPoint.java:143)
	at org.multimc.EntryPoint.main(EntryPoint.java:34)