this is the crush report

---- Minecraft Crash Report ----
// Daisy, daisy...

Time: 1/19/24 10:51 PM
Description: Unexpected error

java.lang.NullPointerException: Unexpected error
at cam72cam.mod.MinecraftClient.getPlayer(MinecraftClient.java:27)
at cam72cam.immersiverailroading.ImmersiveRailroading.lambda$clientEvent$3(ImmersiveRailroading.java:200)
at cam72cam.immersiverailroading.ImmersiveRailroading$$Lambda$685/2064723866.render(Unknown Source)
at cam72cam.mod.render.GlobalRender.lambda$registerOverlay$3(GlobalRender.java:82)
at cam72cam.mod.render.GlobalRender$$Lambda$686/1683803818.accept(Unknown Source)
at cam72cam.mod.event.ClientEvents$ClientEventBus.lambda$onOverlayEvent$5(ClientEvents.java:193)
at cam72cam.mod.event.ClientEvents$ClientEventBus$$Lambda$741/958282869.accept(Unknown Source)
at java.lang.Iterable.forEach(Iterable.java:75)
at cam72cam.mod.event.Event.execute(Event.java:24)
at cam72cam.mod.event.ClientEvents$ClientEventBus.onOverlayEvent(ClientEvents.java:193)
at cpw.mods.fml.common.eventhandler.ASMEventHandler_20_ClientEventBus_onOverlayEvent_Pre.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 net.minecraftforge.client.GuiIngameForge.pre(GuiIngameForge.java:895)
at net.minecraftforge.client.GuiIngameForge.renderHotbar(GuiIngameForge.java:186)
at net.minecraftforge.client.GuiIngameForge.func_73830_a(GuiIngameForge.java:141)
at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1038)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1001)
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(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

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

-- Head --
Stacktrace:
at cam72cam.mod.MinecraftClient.getPlayer(MinecraftClient.java:27)
at cam72cam.immersiverailroading.ImmersiveRailroading.lambda$clientEvent$3(ImmersiveRailroading.java:200)
at cam72cam.immersiverailroading.ImmersiveRailroading$$Lambda$685/2064723866.render(Unknown Source)
at cam72cam.mod.render.GlobalRender.lambda$registerOverlay$3(GlobalRender.java:82)
at cam72cam.mod.render.GlobalRender$$Lambda$686/1683803818.accept(Unknown Source)
at cam72cam.mod.event.ClientEvents$ClientEventBus.lambda$onOverlayEvent$5(ClientEvents.java:193)
at cam72cam.mod.event.ClientEvents$ClientEventBus$$Lambda$741/958282869.accept(Unknown Source)
at java.lang.Iterable.forEach(Iterable.java:75)
at cam72cam.mod.event.Event.execute(Event.java:24)
at cam72cam.mod.event.ClientEvents$ClientEventBus.onOverlayEvent(ClientEvents.java:193)
at cpw.mods.fml.common.eventhandler.ASMEventHandler_20_ClientEventBus_onOverlayEvent_Pre.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 net.minecraftforge.client.GuiIngameForge.pre(GuiIngameForge.java:895)
at net.minecraftforge.client.GuiIngameForge.renderHotbar(GuiIngameForge.java:186)
at net.minecraftforge.client.GuiIngameForge.func_73830_a(GuiIngameForge.java:141)

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityClientPlayerMP['LeeSamuelLydia'/1003, l='MpServer', x=8.50, y=66.62, z=8.50]]
Chunk stats: MultiplayerChunkCache: 0, 0
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: 1 game time, 1 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: 1 total; [EntityClientPlayerMP['LeeSamuelLydia'/1003, l='MpServer', x=8.50, y=66.62, z=8.50]]
Retry entities: 0 total; []
Server brand: fml,forge
Server type: Integrated singleplayer server
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:373)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2444)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:927)
at net.minecraft.client.main.Main.main(SourceFile:148)
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.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.7.10
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: 1922317800 bytes (1833 MB) / 2209873920 bytes (2107 MB) up to 7456948224 bytes (7111 MB)
JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx8000m -Xms256m
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1614 8 mods loaded, 8 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHIJAAAAAAAAA mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)
UCHIJAAAAAAAAA FML{7.10.99.99} [Forge Mod Loader] (forge-1.7.10-10.13.4.1614-1.7.10.jar)
UCHIJAAAAAAAAA Forge{10.13.4.1614} [Minecraft Forge] (forge-1.7.10-10.13.4.1614-1.7.10.jar)
UCHIJAAAAAAAAA ImmersiveEngineering{0.7.7} [Immersive Engineering] (ImmersiveEngineering-0.7.7.jar)
UCHIJAAAAAAAAA immersiveintegration{0.6.8} [Immersive Integration] (immersiveintegration-0.6.8.jar)
UCHIJAAAAAAAAA trackapi{1.2} [Track API] (TrackAPI-1.2.jar)
UCHIJAAAAAAAAA universalmodcore{1.2.1} [UniversalModCore] (UniversalModCore-1.7.10-forge-1.2.1.jar)
UCHIJAAAAAAAAA immersiverailroading{1.10.0} [Immersive Railroading] (ImmersiveRailroading-1.7.10-forge-1.10.0.jar)
GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.6.0 NVIDIA 546.17' Renderer: 'NVIDIA GeForce GTX 1650 SUPER/PCIe/SSE2'
Launched Version: forge-10.13.4.1614
LWJGL: 2.9.1
OpenGL: NVIDIA GeForce GTX 1650 SUPER/PCIe/SSE2 GL version 4.6.0 NVIDIA 546.17, NVIDIA Corporation
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Anisotropic Filtering: Off (1)

Sadly the same for the nether. Had and still have his problem like many others. I just hope a new release for the 1.7.10 will come soon.

I wrote a quick mod to fix this. Here it is.

Thanks a lot!

No problem!