[Hexxit Server Crash]

Hello! Last week I could join my Hexxit Server without any problems but now Minecraft crashes as soon as I try to join. My sister is still able to join the server. I've already allocated more RAM in the Java settings. I've also already deleted all technic files from my computer and reinstalled the technic launcher but nothing seems to work. I'd be so thankful if someone could take a look at my crash report and help me solve this problem. Thank you so much.

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

Time: 5/15/20 8:44 PM
Description: Unexpected error

java.lang.NullPointerException
    at net.minecraft.client.renderer.ItemRenderer.func_78446_a(ItemRenderer.java:618)
    at net.minecraft.client.renderer.ItemRenderer.func_78447_b(ItemRenderer.java:591)
    at net.minecraft.client.renderer.EntityRenderer.func_78476_b(EntityRenderer.java:705)
    at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1273)
    at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:991)
    at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:871)
    at net.minecraft.client.Minecraft.run(Minecraft.java:760)
    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 net.minecraft.client.renderer.ItemRenderer.func_78446_a(ItemRenderer.java:618)
    at net.minecraft.client.renderer.ItemRenderer.func_78447_b(ItemRenderer.java:591)
    at net.minecraft.client.renderer.EntityRenderer.func_78476_b(EntityRenderer.java:705)
    at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1273)

-- Affected level --
Details:
    Level name: MpServer
    All players: 1 total; [EntityClientPlayerMP['annaxbel'/204, l='MpServer', x=-1148.11, y=79.12, z=-424.17]]
    Chunk stats: MultiplayerChunkCache: 441
    Level seed: 0
    Level generator: ID 00 - default, ver 1. Features enabled: false
    Level generator options: 
    Level spawn location: World: (-204,64,248), Chunk: (at 4,4,8 in -13,15; contains blocks -208,0,240 to -193,255,255), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
    Level time: 3972779 game time, 4964465 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: ~~ERROR~~ NullPointerException: null
    Retry entities: 0 total; []
Stacktrace:
    at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:441)
    at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2414)
    at net.minecraft.client.Minecraft.run(Minecraft.java:783)
    at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
    Minecraft Version: 1.5.2
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_251, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 1756561064 bytes (1675 MB) / 2071461888 bytes (1975 MB) up to 2071461888 bytes (1975 MB)
    JVM Flags: 3 total; -Xms2048m -Xmx2048m -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump
    AABB Pool Size: 4592 (257152 bytes; 0 MB) allocated, 4592 (257152 bytes; 0 MB) used
    Suspicious classes: FML and Forge are installed
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    FML: MCP v7.51 FML v5.2.23.737 Minecraft Forge 7.8.1.737 69 mods loaded, 68 mods active
    mcp{7.51} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    FML{5.2.23.737} [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    Forge{7.8.1.737} [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    CodeChickenCore{0.8.7.3} [CodeChicken Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    CoFHFramework{1.5.2.5} [CoFH Framework] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ImmibisMicroblocks{55.0.7} [Immibis's Microblocks] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    NotEnoughItems{1.5.2.28} [Not Enough Items] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    mod_bspkrsCore{v2.09(1.5.2)} [bspkrsCore] ([1.5.2]bspkrsCorev2.09.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    TreeCapitator{Forge 1.5.2.r14} [TreeCapitator] ([1.5.2]TreeCapitator.Forge.1.5.2.r14.Uni.CoreMod.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    CoFHCore{1.5.2.5} [CoFHCore] (CoFHCore-1.5.2.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    CoFHWorld{1.5.2.5} [CoFHWorld] (CoFHCore-1.5.2.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    CustomLAN{2.2} [Custom LAN Mod] (CustomPortForge.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ImmibisMicroblocksInstallCheck{55.0.7} [Immibis's Microblocks (Checks for incorrect installation, ignore this)] (immibis-microblocks-55.0.7.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    DamageIndicatorsMod{2.7.0.1} [Damage Indicators] (1.5.2 DamageIndicators v2.7.0.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    AsgardShield_Core{2.0.4} [AsgardShield] (1.5.2AsgardShield_Core_2.0.4Forge.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ASAddon_Hallowed{2.0.0} [AS Addon- Hallowed] (1.5.2ASAddonHallowed_v2.0.0Forge.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    HarkenScythe_Core{2.1.6} [HarkenScythe] (1.5.2HarkenScythe_v2.1.6Forge.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ASAddon_HarkenScythe{2.0.0} [AS Addon- HarkenScythe] (1.5.2ASAddonHarkenScythe_v2.0.0Forge.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ASAddon_NetherEnder{2.0.0} [AS Addon- Nether-Ender] (1.5.2ASAddonNetherEnder_v2.0.0Forge.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ASAddon_ColorAPI{1.0.0} [ASAddon_ColorAPI] (1.5.2AsgardShield_Core_2.0.4Forge.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    BetterStorage{0.6.2.23-hotfix2} [BetterStorage] ([1.5.2]BetterStorage_0.6.2.23-hotfix2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    mod_ArmorBarMod{0.7.1} [Armor Bar Mod] (ArmorBarv0.7.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    Artifice{1.5.2R1.1.2} [Artifice] (Artifice-1.1.2-182.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ArtificeCompat|Chisel{1.5.2R1.1.2} [Artifice Compat: Chisel] (Artifice-1.1.2-182.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ArtificeCompat|EE3{1.5.2R1.1.2} [Artifice Compat: EE3] (Artifice-1.1.2-182.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ArtificeCompat|Forestry{1.5.2R1.1.2} [Artifice Compat: Forestry] (Artifice-1.1.2-182.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ArtificeCompat|MFR{1.5.2R1.1.2} [Artifice Compat: MFR] (Artifice-1.1.2-182.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ArtificeCompat|Railcraft{1.5.2R1.1.2} [Artifice Compat: Railcraft] (Artifice-1.1.2-182.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ArtificeCompat|Vanilla{1.5.2R1.1.2} [Artifice Compat: Vanilla] (Artifice-1.1.2-182.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    Backpack{1.12.13} [Backpack] (backpack-1.12.13-1.5.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    mod_BackTools{1.5.2v1} [mod_BackTools] (BackTools1.5.2v1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    BattleTowers{1.3.4} [Battle Towers] (BattleTowers_1.5.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    BetterDungeons{1.8} [Better dungeons] (BetterDungeons.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    BiblioCraft{1.3.3} [BiblioCraft] (BiblioCraft[v1.3.3].zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    mod_BuffBarMod{0.7.1} [Buff Bar Mod] (BuffBarv0.7.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ChestTransporter{1.1.6} [Chest Transporter] (chestTransporter_1.1.6_Universal.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    DimDoors{1.5.2R1.4.1RC1} [Dimensional Doors] (DimensionalDoors-1.5.2R1.4.1RC1-194.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    eplus{1.15.4} [Enchanting Plus] (EnchantingPlus-1.15.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ExtrabiomesXL{3.13.4} [ExtrabiomesXL] (ExtrabiomesXL-universal-1.5.2-3.13.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    hexxitgear{1.5.2R1.0} [Hexxit Gear] (HexxitGear-1.0-23.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ImmibisCore{55.1.6} [Immibis Core] (immibis-core-55.1.6.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    InfernalMobs{1.3.1} [Infernal Mobs] (InfernalMobs_1.5.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    inventorytweaks{1.54b} [Inventory Tweaks] (InventoryTweaks-1.54b.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    MapWriter{2.0} [MapWriter] (mapwriter-2.0.5.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    Meteors{2.10.2} [Falling Meteors] (Meteors Mod V2.10.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    More Bows{1.5_v1} [More Bows mod] (More bows 1.5.2_2 Forge.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    Natura{2.1.5} [Natura] (Natura_1.5.2_2.1.5.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    Natura|CompatMineFactoryReloaded{0.1} [Natura compat: MFR] (Natura_1.5.2_2.1.5.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    NEIPlugins{1.0.9.3} [NEI Plugins] (NEIPlugins-1.0.9.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    LegendGear{1.5.2} [LegendGear] (NMcCoy-LegendGear-1.5.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ObsidiPlates{1.5.0} [Obsidian Pressure Plates] (obsidiplates-1.5.2-universal-1.5.0.13.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    OffLawn{1.0} [offLawn] (OffLawn-1.5.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ProjectZulu|Core{1.0.3.8} [Project Zulu Core] (ProjectZuluCompletev1.0.3.8.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ProjectZulu|Blocks{1.0.3.8} [Project Zulu Block and Items] (ProjectZuluCompletev1.0.3.8.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ProjectZulu|Dungeon{1.0.3.8} [Project Zulu Mobs] (ProjectZuluCompletev1.0.3.8.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ProjectZulu|Mobs{1.0.3.8} [Project Zulu Mobs] (ProjectZuluCompletev1.0.3.8.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    ProjectZulu|World{1.0.3.8} [Project Zulu World] (ProjectZuluCompletev1.0.3.8.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    QuantumCraft{1.01} [qCraft] (qCraft1.01.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    xreliquary{1.5.2} [Xeno's Reliquary] (Reliquary1.0.6d.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    rftl{1.0} [RottenFleshToLeather] (RottenFleshToLeather-1.5.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    AS_Ruins{10.3} [Ruins Spawning System] (Ruins_1.5.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    secretroomsmod{4.6.0} [SecretRoomsMod] (SecretRoomsMod-universal-4.6.0.283.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    SoulShards{1.0.16} [Soul Shards] (SoulShards-1.0.36-universal-srg.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    TConstruct{1.5.2_1.4.3d7} [Tinkers' Construct] (TConstruct_1.5.2_1.4.3.final.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    TConstruct|CompatMineFactoryReloaded{0.1} [TConstruct Compat: MFR] (TConstruct_1.5.2_1.4.3.final.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    TwilightForest{1.18.1} [The Twilight Forest] (twilightforest-1.18.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    WildCaves3{0.4.2} [Wild Caves 3] (WildCaves3-0.4.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    chococraft{2.8.8} [Torojima's ChocoCraft] (zzzChococraft_2.8.8.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    LumySkinPatch{1.0.5} [Lumy Skin Patch] (coremods) Unloaded->Disabled
    LWJGL: 2.9.0
    OpenGL: Intel(R) HD Graphics 400 GL version 4.4.0 - Build 20.19.15.5063, Intel
    Is Modded: Definitely; Client brand changed to 'fml,forge'
    Type: Client (map_client.txt)
    Texture Pack: Default
    Profiler Position: N/A (disabled)
    Vec3 Pool Size: 641 (35896 bytes; 0 MB) allocated, 641 (35896 bytes; 0 MB) used