Every time I try to flip to the second pg of the mob handbook it crashes my game. It's been every single time I've tried

Same!

Here is my crash report:

Description: Rendering screen

java.lang.NullPointerException: Cannot invoke "net.minecraft.world.entity.EntityDimensions.m_20388_(float)" because "this.size" is null
at com.github.alexthe666.alexsmobs.entity.EntityCachalotPart.m_6972_(EntityCachalotPart.java:82) ~[alexsmobs-1.22.5.jar%23212!/:1.22.5] {re:classloading}
at net.minecraft.world.entity.Entity.getDimensionsForge(Entity.java:3496) ~[client-1.20.1-20230612.114412-srg.jar%23266!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:create.mixins.json:EntityMixin,pl:mixin:APP:mixins.artifacts.json:item.aquadashers.EntityMixin,pl:mixin:APP:mixins.artifacts.json:item.umbrella.EntityMixin,pl:mixin:APP:relics.mixins.json:MixinEntity,pl:mixin:APP:balm.mixins.json:EntityMixin,pl:mixin:APP:blueprint.mixins.json:EntityMixin,pl:mixin:APP:supplementaries-common.mixins.json:EntityMixin,pl:mixin:APP:curios.mixins.json:AccessorEntity,pl:mixin:APP:expandability.mixins.json:swimming.EntityMixin,pl:mixin:APP:expandability-common.mixins.json:fluidcollision.EntityMixin,pl:mixin:APP:expandability-common.mixins.json:swimming.EntityMixin,pl:mixin:APP:assets/sound_physics_remastered/sound_physics_remastered.mixins.json:EntityMixin,pl:mixin:APP:create.mixins.json:ContraptionDriverInteractMixin,pl:mixin:APP:create.mixins.json:client.EntityContraptionInteractionMixin,pl:mixin:A}
at net.minecraft.world.entity.Entity.(Entity.java:261) ~[client-1.20.1-20230612.114412-srg.jar%23266!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:create.mixins.json:EntityMixin,pl:mixin:APP:mixins.artifacts.json:item.aquadashers.EntityMixin,pl:mixin:APP:mixins.artifacts.json:item.umbrella.EntityMixin,pl:mixin:APP:relics.mixins.json:MixinEntity,pl:mixin:APP:balm.mixins.json:EntityMixin,pl:mixin:APP:blueprint.mixins.json:EntityMixin,pl:mixin:APP:supplementaries-common.mixins.json:EntityMixin,pl:mixin:APP:curios.mixins.json:AccessorEntity,pl:mixin:APP:expandability.mixins.json:swimming.EntityMixin,pl:mixin:APP:expandability-common.mixins.json:fluidcollision.EntityMixin,pl:mixin:APP:expandability-common.mixins.json:swimming.EntityMixin,pl:mixin:APP:assets/sound_physics_remastered/sound_physics_remastered.mixins.json:EntityMixin,pl:mixin:APP:create.mixins.json:ContraptionDriverInteractMixin,pl:mixin:APP:create.mixins.json:client.EntityContraptionInteractionMixin,pl:mixin:A}
at net.minecraftforge.entity.PartEntity.(PartEntity.java:16) ~[forge-1.20.1-47.1.28-universal.jar%23271!/:?] {re:classloading}
at com.github.alexthe666.alexsmobs.entity.EntityCachalotPart.(EntityCachalotPart.java:28) ~[alexsmobs-1.22.5.jar%23212!/:1.22.5] {re:classloading}
at com.github.alexthe666.alexsmobs.entity.EntityCachalotWhale.(EntityCachalotWhale.java:109) ~[alexsmobs-1.22.5.jar%23212!/:1.22.5] {re:classloading}
at net.minecraft.world.entity.EntityType.m_20615_(EntityType.java:525) ~[client-1.20.1-20230612.114412-srg.jar%23266!/:?] {re:mixin,xf:fml:forge:forge_method_redirector,re:classloading,xf:fml:forge:forge_method_redirector,pl:mixin:APP:flywheel.mixins.json:EntityTypeMixin,pl:mixin:APP:architectury-common.mixins.json:inject.MixinEntityType,pl:mixin:A}
at com.github.alexthe666.citadel.client.gui.EntityLinkButton.m_87963_(EntityLinkButton.java:53) ~[citadel-2.4.2-1.20.1.jar%23222!/:2.4.2-1.20.1] {re:classloading}
at net.minecraft.client.gui.components.AbstractWidget.m_88315_(AbstractWidget.java:70) ~[client-1.20.1-20230612.114412-srg.jar%23266!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.gui.screens.Screen.m_88315_(Screen.java:119) ~[client-1.20.1-20230612.114412-srg.jar%23266!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:computing_frames,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:controlling.mixins.json:AccessScreen,pl:mixin:APP:balm.mixins.json:ScreenAccessor,pl:mixin:APP:patchouli_xplat.mixins.json:client.AccessorScreen,pl:mixin:A,pl:runtimedistcleaner:A}
at com.github.alexthe666.citadel.client.gui.GuiBasicBook.m_88315_(GuiBasicBook.java:288) ~[citadel-2.4.2-1.20.1.jar%23222!/:2.4.2-1.20.1] {re:classloading}
at com.github.alexthe666.alexsmobs.client.gui.GUIAnimalDictionary.m_88315_(GUIAnimalDictionary.java:33) ~[alexsmobs-1.22.5.jar%23212!/:1.22.5] {re:classloading,pl:runtimedistcleaner:A}
at net.minecraft.client.gui.screens.Screen.m_280264_(Screen.java:109) ~[client-1.20.1-20230612.114412-srg.jar%23266!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:computing_frames,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:controlling.mixins.json:AccessScreen,pl:mixin:APP:balm.mixins.json:ScreenAccessor,pl:mixin:APP:patchouli_xplat.mixins.json:client.AccessorScreen,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraftforge.client.ForgeHooksClient.drawScreenInternal(ForgeHooksClient.java:423) ~[forge-1.20.1-47.1.28-universal.jar%23271!/:?] {re:classloading}
at net.minecraftforge.client.ForgeHooksClient.drawScreen(ForgeHooksClient.java:416) ~[forge-1.20.1-47.1.28-universal.jar%23271!/:?] {re:classloading}
at net.minecraft.client.renderer.GameRenderer.m_109093_(GameRenderer.java:965) ~[client-1.20.1-20230612.114412-srg.jar%23266!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.client.Minecraft.m_91383_(Minecraft.java:1146) ~[client-1.20.1-20230612.114412-srg.jar%23266!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:combatroll.mixins.json:MinecraftClientMixin,pl:mixin:APP:balm.mixins.json:MinecraftMixin,pl:mixin:APP:blueprint.mixins.json:client.MinecraftMixin,pl:mixin:APP:flywheel.mixins.json:PausedPartialTickAccessor,pl:mixin:APP:architectury.mixins.json:MixinMinecraft,pl:mixin:APP:create.mixins.json:client.WindowResizeMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.client.Minecraft.m_91374_(Minecraft.java:718) ~[client-1.20.1-20230612.114412-srg.jar%23266!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:combatroll.mixins.json:MinecraftClientMixin,pl:mixin:APP:balm.mixins.json:MinecraftMixin,pl:mixin:APP:blueprint.mixins.json:client.MinecraftMixin,pl:mixin:APP:flywheel.mixins.json:PausedPartialTickAccessor,pl:mixin:APP:architectury.mixins.json:MixinMinecraft,pl:mixin:APP:create.mixins.json:client.WindowResizeMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.client.main.Main.main(Main.java:218) ~[forge-47.1.28.jar:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:flywheel.mixins.json:ClientMainMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] {}
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?] {}
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] {}
at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?] {}
at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.runTarget(CommonLaunchHandler.java:111) ~[fmlloader-1.20.1-47.1.28.jar:?] {}
at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.clientService(CommonLaunchHandler.java:99) ~[fmlloader-1.20.1-47.1.28.jar:?] {}
at net.minecraftforge.fml.loading.targets.CommonClientLaunchHandler.lambda$makeService$0(CommonClientLaunchHandler.java:25) ~[fmlloader-1.20.1-47.1.28.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.Launcher.run(Launcher.java:108) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.Launcher.main(Launcher.java:78) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) ~[bootstraplauncher-1.1.2.jar:?] {}