On forge 43.1.47
On a server
Using a modpack
Apparently caused by optifine.

Some logs:

[14:21:50] [Render thread/WARN]: [OptiFine] *** Exception outside of method ***
[14:21:50] [Render thread/WARN]: [OptiFine] Method deactivated: public static void net.minecraftforge.client.ForgeHooksClient.onScreenCharTypedPost(net.minecraft.client.gui.screens.Screen,char,int)
[14:21:50] [Render thread/WARN]: [OptiFine]
java.lang.NullPointerException: Cannot invoke "java.lang.Boolean.booleanValue()" because "retVal" is null
at net.optifine.reflect.Reflector.callBoolean(Reflector.java:709) ~[OptiFine_1.19.2_HD_U_H9.jar%23281!/:?]
at net.minecraft.client.KeyboardHandler.lambda$onCharEvent$5(KeyboardHandler.java:664) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.gui.screens.Screen.m_96579_(Screen.java:522) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.KeyboardHandler.m_90889_(KeyboardHandler.java:649) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.KeyboardHandler.lambda$setupCallbacks$9(KeyboardHandler.java:713) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.util.thread.BlockableEventLoop.execute(BlockableEventLoop.java:118) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.KeyboardHandler.lambda$setupCallbacks$10(KeyboardHandler.java:712) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at org.lwjgl.glfw.GLFWCharModsCallbackI.callback(GLFWCharModsCallbackI.java:46) ~[lwjgl-glfw-3.3.1.jar%23138!/:build 7]
at org.lwjgl.system.JNI.invokeV(Native Method) ~[lwjgl-3.3.1.jar%23130!/:build 7]
at org.lwjgl.glfw.GLFW.glfwPollEvents(GLFW.java:3403) ~[lwjgl-glfw-3.3.1.jar%23138!/:build 7]
at com.mojang.blaze3d.systems.RenderSystem.m_69495_(RenderSystem.java:198) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at com.mojang.blaze3d.platform.Window.m_85435_(Window.java:453) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.Minecraft.m_91383_(Minecraft.java:1143) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.Minecraft.m_91362_(Minecraft.java:2116) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.Minecraft.m_91320_(Minecraft.java:2083) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.Minecraft.m_91394_(Minecraft.java:1277) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.Minecraft.m_91374_(Minecraft.java:718) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.main.Main.m_239872_(Main.java:212) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.main.Main.main(Main.java:51) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?]
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?]
at net.minecraftforge.fml.loading.targets.CommonClientLaunchHandler.lambda$launchService$0(CommonClientLaunchHandler.java:27) ~[fmlloader-1.19.2-43.1.47.jar%2395!/:?]
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) [modlauncher-10.0.8.jar%2382!/:?]
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) [modlauncher-10.0.8.jar%2382!/:?]
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) [modlauncher-10.0.8.jar%2382!/:?]
at cpw.mods.modlauncher.Launcher.run(Launcher.java:106) [modlauncher-10.0.8.jar%2382!/:?]
at cpw.mods.modlauncher.Launcher.main(Launcher.java:77) [modlauncher-10.0.8.jar%2382!/:?]
at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) [modlauncher-10.0.8.jar%2382!/:?]
at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) [modlauncher-10.0.8.jar%2382!/:?]
at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) [bootstraplauncher-1.1.2.jar:?]
[14:21:53] [Render thread/ERROR]: Reported exception thrown!
net.minecraft.ReportedException: Ticking entity
at net.minecraft.world.level.Level.m_46653_(Level.java:466) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.multiplayer.ClientLevel.lambda$tickEntities$4(ClientLevel.java:315) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.world.level.entity.EntityTickList.m_156910_(EntityTickList.java:54) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.multiplayer.ClientLevel.m_104804_(ClientLevel.java:311) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.Minecraft.m_91398_(Minecraft.java:1791) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.Minecraft.m_91383_(Minecraft.java:1078) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.Minecraft.m_91374_(Minecraft.java:700) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.main.Main.m_239872_(Main.java:212) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.main.Main.main(Main.java:51) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?]
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?]
at net.minecraftforge.fml.loading.targets.CommonClientLaunchHandler.lambda$launchService$0(CommonClientLaunchHandler.java:27) ~[fmlloader-1.19.2-43.1.47.jar%2395!/:?]
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) [modlauncher-10.0.8.jar%2382!/:?]
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) [modlauncher-10.0.8.jar%2382!/:?]
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) [modlauncher-10.0.8.jar%2382!/:?]
at cpw.mods.modlauncher.Launcher.run(Launcher.java:106) [modlauncher-10.0.8.jar%2382!/:?]
at cpw.mods.modlauncher.Launcher.main(Launcher.java:77) [modlauncher-10.0.8.jar%2382!/:?]
at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) [modlauncher-10.0.8.jar%2382!/:?]
at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) [modlauncher-10.0.8.jar%2382!/:?]
at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) [bootstraplauncher-1.1.2.jar:?]
Caused by: java.lang.NullPointerException: Cannot invoke "net.minecraft.world.level.block.state.BlockState.getSoundType(net.minecraft.world.level.LevelReader, net.minecraft.core.BlockPos, net.minecraft.world.entity.Entity)" because the return value of "cjminecraft.doubleslabs.api.IBlockInfo.getBlockState()" is null
at cjminecraft.doubleslabs.common.blocks.VerticalSlabBlock.lambda$getSoundType$24(VerticalSlabBlock.java:461) ~[DoubleSlabs-1.19-6.1.0.jar%23193!/:6.1.0]
at java.util.Optional.map(Optional.java:260) ~[?:?]
at cjminecraft.doubleslabs.common.blocks.VerticalSlabBlock.getSoundType(VerticalSlabBlock.java:461) ~[DoubleSlabs-1.19-6.1.0.jar%23193!/:6.1.0]
at net.minecraftforge.common.extensions.IForgeBlockState.getSoundType(IForgeBlockState.java:419) ~[forge-1.19.2-43.1.47-universal.jar%23276!/:?]
at net.minecraft.world.entity.Entity.m_7355_(Entity.java:946) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.world.entity.Entity.m_6478_(Entity.java:661) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.player.LocalPlayer.m_6478_(LocalPlayer.java:935) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.world.entity.LivingEntity.m_21074_(LivingEntity.java:2192) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.world.entity.LivingEntity.m_7023_(LivingEntity.java:2149) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.world.entity.player.Player.m_7023_(Player.java:1441) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.world.entity.LivingEntity.m_8107_(LivingEntity.java:2588) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.world.entity.player.Player.m_8107_(Player.java:501) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.player.LocalPlayer.m_8107_(LocalPlayer.java:851) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.world.entity.LivingEntity.m_8119_(LivingEntity.java:2291) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.world.entity.player.Player.m_8119_(Player.java:243) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.player.AbstractClientPlayer.m_8119_(AbstractClientPlayer.java:277) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.player.LocalPlayer.m_8119_(LocalPlayer.java:200) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.client.multiplayer.ClientLevel.m_104639_(ClientLevel.java:338) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
at net.minecraft.world.level.Level.m_46653_(Level.java:457) ~[client-1.19.2-20220805.130853-srg.jar%23271!/:?]
... 21 more
[14:21:53] [Render thread/FATAL]: Preparing crash report with UUID 0ff3de5e-7861-4af8-ace8-e64d59417849
[14:21:54] [Render thread/FATAL]: Preparing crash report with UUID 93faff62-a7f6-4143-8dd7-1a9b45e9414e
[14:21:54] [Render thread/FATAL]: Preparing crash report with UUID e50c19f2-b060-455b-ba17-551ec636022c