The Game crashin the render with some times when any mobs appears.

---- Minecraft Crash Report ----
// My bad.

Time: 4/06/20 07:12 PM
Description: Rendering entity in world

java.lang.NullPointerException: Rendering entity in world
at its_meow.betteranimalsplus.client.renderer.entity.RenderWhale.render(RenderWhale.java:37) ~[?:8.2.1.96] {re:classloading}
at its_meow.betteranimalsplus.client.renderer.entity.RenderWhale.func_225623_a_(RenderWhale.java:14) ~[?:8.2.1.96] {re:classloading}
at net.minecraft.client.renderer.entity.EntityRendererManager.func_229084_a_(EntityRendererManager.java:300) ~[?:?] {re:classloading,pl:accesstransformer:B,xf:fml:quark:add-render,xf:OptiFine:default}
at net.minecraft.client.renderer.WorldRenderer.func_228418_a_(WorldRenderer.java:1855) ~[?:?] {re:classloading,xf:OptiFine:default,xf:fml:sereneseasons:temperature_transformer}
at net.optifine.shaders.ShadersRender.renderShadowMap(ShadersRender.java:385) ~[?:?] {re:classloading}
at net.optifine.shaders.Shaders.beginRender(Shaders.java:4248) ~[?:?] {re:classloading}
at net.minecraft.client.renderer.GameRenderer.func_228378_a_(GameRenderer.java:926) ~[?:?] {re:classloading,pl:accesstransformer:B,xf:OptiFine:default}
at net.minecraft.client.renderer.GameRenderer.func_195458_a(GameRenderer.java:686) ~[?:?] {re:classloading,pl:accesstransformer:B,xf:OptiFine:default}
at net.minecraft.client.Minecraft.func_195542_b(Minecraft.java:924) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:553) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.main.Main.main(SourceFile:204) [?:?] {re:classloading}
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51] {}
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51] {}
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51] {}
at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51] {}
at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:56) [forge-1.15.2-31.1.74.jar:31.1] {}
at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$425/501491806.call(Unknown Source) [forge-1.15.2-31.1.74.jar:31.1] {}
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-5.1.0.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-5.1.0.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-5.1.0.jar:?] {}
at cpw.mods.modlauncher.Launcher.run(Launcher.java:81) [modlauncher-5.1.0.jar:?] {}
at cpw.mods.modlauncher.Launcher.main(Launcher.java:65) [modlauncher-5.1.0.jar:?] {}

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

-- Head --
Thread: Render thread
Stacktrace:
at its_meow.betteranimalsplus.client.renderer.entity.RenderWhale.render(RenderWhale.java:37)
at its_meow.betteranimalsplus.client.renderer.entity.RenderWhale.func_225623_a_(RenderWhale.java:14)

-- Entity being rendered --
Details:
Entity Type: betteranimalsplus:whale (its_meow.betteranimalsplus.common.entity.EntityWhale)
Entity ID: 32680
Entity Name: Whale
Entity's Exact location: 1466.50, 57.00, -184.50
Entity's Block location: World: (1466,57,-185), Chunk: (at 10,3,7 in 91,-12; contains blocks 1456,0,-192 to 1471,255,-177), Region: (2,-1; contains chunks 64,-32 to 95,-1, blocks 1024,0,-512 to 1535,255,-1)
Entity's Momentum: 0.00, 0.00, 0.00
Entity's Passengers: []
Entity's Vehicle: ERROR NullPointerException: null

-- Renderer details --
Details:
Assigned renderer: its_meow.betteranimalsplus.client.renderer.entity.RenderWhale@1d58892c
Location: -507.05,-26.72,101.42 - World: (-508,-27,101), Chunk: (at 4,-2,5 in -32,6; contains blocks -512,0,96 to -497,255,111), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Rotation: 106.875
Delta: 0.70002246
Stacktrace:
at net.minecraft.client.renderer.entity.EntityRendererManager.func_229084_a_(EntityRendererManager.java:300)
at net.minecraft.client.renderer.WorldRenderer.func_228418_a_(WorldRenderer.java:1855)
at net.optifine.shaders.ShadersRender.renderShadowMap(ShadersRender.java:385)
at net.optifine.shaders.Shaders.beginRender(Shaders.java:4248)
at net.minecraft.client.renderer.GameRenderer.func_228378_a_(GameRenderer.java:926)

-- Affected level --
Details:
All players: 1 total; [ClientPlayerEntity['MrBargz'/31472, l='MpServer', x=1533.70, y=65.00, z=-230.62]]
Chunk stats: Client Chunk Cache: 729, 481
Level dimension: DimensionType{minecraft:overworld}
Level name: MpServer
Level seed: -5942481998956150258
Level generator: ID 07 - biomesoplenty, ver 0. Features enabled: false
Level generator options: {}
Level spawn location: World: (16,66,-48), Chunk: (at 0,4,0 in 1,-3; contains blocks 16,0,-48 to 31,255,-33), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
Level time: 6248480 game time, 147774 day time
Known server brands:
Level was modded: false
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
Server brand: forge
Server type: Non-integrated multiplayer server
Stacktrace:
at net.minecraft.client.world.ClientWorld.func_72914_a(ClientWorld.java:611)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:1763)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:567)
at net.minecraft.client.main.Main.main(SourceFile:204)
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.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:56)
at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$425/501491806.call(Unknown Source)
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37)
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54)
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72)
at cpw.mods.modlauncher.Launcher.run(Launcher.java:81)
at cpw.mods.modlauncher.Launcher.main(Launcher.java:65)

-- System Details --
Details:
Minecraft Version: 1.15.2
Minecraft Version ID: 1.15.2
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: 4200966712 bytes (4006 MB) / 8589934592 bytes (8192 MB) up to 8589934592 bytes (8192 MB)
CPUs: 8
JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx8G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
ModLauncher: 5.1.0+69+master.79f13f7
ModLauncher launch target: fmlclient
ModLauncher naming: srg
ModLauncher services:
/eventbus-2.1.0-service.jar eventbus PLUGINSERVICE
/forge-1.15.2-31.1.74.jar object_holder_definalize PLUGINSERVICE
/forge-1.15.2-31.1.74.jar runtime_enum_extender PLUGINSERVICE
/accesstransformers-2.1.1-shadowed.jar accesstransformer PLUGINSERVICE
/forge-1.15.2-31.1.74.jar capability_inject_definalize PLUGINSERVICE
/forge-1.15.2-31.1.74.jar runtimedistcleaner PLUGINSERVICE
/preview_OptiFine_1.15.2_HD_U_G1_pre19.jar OptiFine TRANSFORMATIONSERVICE
/forge-1.15.2-31.1.74.jar fml TRANSFORMATIONSERVICE
FML: 31.1
Forge: net.minecraftforge:31.1.74
FML Language Providers:
[email protected]
minecraft@1
Mod List:
Ma-Enchants-1.15.2-3.1.0.jar Ma Enchants {[email protected] DONE}
animalnet-v1.15.2+Forge+b1.jar AnimalNet {[email protected] Forge b1 DONE}
mining-helmet-1.15.2-1.0.6.jar Mining Helmet {[email protected] DONE}
xray-1.15.2-2.2.0.jar Advanced XRay {[email protected] DONE}
bambooblocks-1.15.2-1.3.jar Bamboo Blocks {[email protected] DONE}
vilnames_1.15-2.0.jar Villager Names {[email protected] DONE}
jei-1.15.2-6.0.0.4.jar Just Enough Items {[email protected] DONE}
buzzierbees-1.4.jar Buzzier Bees {[email protected] DONE}
mcw-windows-1.0.1-mc1.15.2_1.15.1.jar Macaw's Windows {[email protected] DONE}
Upgrade-Aquatic-1.15.2-v1.5.1.jar Upgrade Aquatic {[email protected] DONE}
SneakyMagic-v2.0-1.15.2.jar Sneaky Magic {[email protected] DONE}
bloomful-1.15.2-1.3.2.jar Bloomful {bloomful@NONE DONE}
invtweaks-1.15.2-1.0.1.jar Inventory Tweaks Reborn {[email protected] DONE}
extraboats-1.3.5-1.15.2.jar Extra Boats {[email protected] DONE}
Neat+1.6-22.jar Neat {[email protected] DONE}
ForgeEndertech-1.15.2-6.0.2.2-build.0030.jar Forge Endertech {[email protected] DONE}
XaerosWorldMap_1.6.2_Forge_1.15.2.jar Xaero's World Map {[email protected] DONE}
RingOfRepair-1.15.2-1.1.27.jar Ring of Repair {[email protected] DONE}
Placebo-1.15.2-3.0.2.jar Placebo {[email protected] DONE}
comforts-FORGE-1.15.2-2.0.0.2.jar Comforts {[email protected] DONE}
NaturesCompass-1.15.2-1.8.4.jar Nature's Compass {[email protected] DONE}
SereneSeasons-1.15.2-3.0.0.69-universal.jar Serene Seasons {[email protected] DONE}
decorative_blocks-6d.jar Decorative Blocks {[email protected] DONE}
AdHooks-1.15.2-5.0.0.0-build.0004.jar Advanced Hook Launchers {[email protected] DONE}
betteranimalsplus-1.15.2-8.2.1.96.jar Better Animals Plus {[email protected] DONE}
branders-enhanced-spawnermod-1.15.2-1.6.4.jar Enhanced Mob Spawners {[email protected] DONE}
Bookshelf-1.15.2-5.5.33.jar Bookshelf {[email protected] DONE}
BotanyPots-1.15.2-2.0.14.jar BotanyPots {[email protected] DONE}
u_team_core-1.15.2-2.11.0.156.jar U Team Core {[email protected] DONE}
Aquatic+Armors-1.1.jar Aquatic Armors {[email protected] DONE}
mcw-doors-1.0.0-mc1.15.2.jar Macaw's Doors {[email protected] DONE}
Hwyla-forge-1.10.8-B72_1.15.2.jar Waila {waila@version DONE}
CraftTweaker-1.15.2-6.0.0.24.jar CraftTweaker {[email protected] DONE}
swampexpansion-1.15.2-1.6.1.jar Swamp Expansion {swampexpansion@NONE DONE}
forge-1.15.2-31.1.74-universal.jar Forge {[email protected] DONE}
MinersAdvantage-1.15.2-1.6.7.29.jar MinersAdvantage {[email protected] DONE}
forge-1.15.2-31.1.74-client.jar Minecraft {[email protected] DONE}
mcw-bridges-1.0.3-mc1.15.2.jar Macaw's Bridges {[email protected] DONE}
useful_backpacks-1.15.2-1.9.4.63.jar Useful Backpacks {[email protected] DONE}
AmbientSounds_v3.0.19_mc1.15.2.jar Ambient Sounds {[email protected] DONE}
BiomesOPlenty-1.15.2-10.0.0.345-universal.jar Biomes O' Plenty {[email protected] DONE}
phosphor-forge-mc1.15.2-0.5.2+build.4.jar Phosphor {[email protected]+build.4 DONE}
Blur-1.1.0-1.jar Blur {[email protected] DONE}
StructureCompass-1.15-1.2.jar Structure Compass Mod {[email protected] DONE}
AdLods-1.15.2-3.0.3.0-build.0035.jar Large Ore Deposits {[email protected] DONE}
simplefarming-1.15.2-1.2.9.jar Simple Farming {[email protected] DONE}
astikorcarts-1.0.2-1.15.2.jar AstikorCarts {[email protected] DONE}
Xaeros_Minimap_20.12.2_Forge_1.15.2.jar Xaero's Minimap {[email protected] DONE}
autumnity-1.2.0-1.15.2.jar Autumnity {[email protected] DONE}
AutoRegLib-1.5-40.jar AutoRegLib {[email protected] DONE}
Quark-r2.1-235.jar Quark {[email protected] DONE}
OreExcavation-1.7.151.jar Ore Excavation {oreexcavation@NONE DONE}
simplytea-1.15.2-2.2.0.jar Simply Tea {[email protected] DONE}
obfuscate-0.4.3-1.15.2.jar Obfuscate {[email protected] DONE}
vehicle-mod-0.44.0-1.15.2.jar MrCrayfish's Vehicle Mod {[email protected] DONE}
AttainedDrops-1.15.2-6.0.7.jar Attained Drops {[email protected] DONE}
mcw-roofs-1.0.2-mc1.15.2_1.15.1.jar Macaw's Roofs {[email protected] DONE}
furniture-7.0.0-pre16-1.15.1.jar MrCrayfish's Furniture Mod {[email protected] DONE}
AppleSkin-mc1.15.2-forge-1.0.13.jar AppleSkin {[email protected] DONE}
globalxp-1.15.2-v1.4.11.jar Global XP {[email protected] DONE}
incubation-1.0.4-1.15.2.jar Incubation {[email protected] DONE}
SuperTools-1.1_1.15.2.jar Super Tools {[email protected] DONE}
Launched Version: 1.15.2-forge-31.1.74
Backend library: LWJGL version 3.2.2 build 10
Backend API: GeForce GTX 1060/PCIe/SSE2 GL version 4.6.0 NVIDIA 446.14, NVIDIA Corporation
GL Caps: Using framebuffer using OpenGL 3.0
Using VBOs: Yes
Is Modded: Definitely; Client brand changed to 'forge'
Type: Client (map_client.txt)
Resource Packs:
Current Language: Español (México)
CPU: 8x Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
OptiFine Version: OptiFine_1.15.2_HD_U_G1_pre19
OptiFine Build: 20200601-002451
Render Distance Chunks: 15
Mipmaps: 4
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
Shaders: Sildurs Vibrant Shaders v1.27 Extreme.zip
OpenGlVersion: 4.6.0 NVIDIA 446.14
OpenGlRenderer: GeForce GTX 1060/PCIe/SSE2
OpenGlVendor: NVIDIA Corporation
CpuCount: 8

Duplicate of #165 (for reasons other than same crash, thank you for your report!)