when i going to minecraft realm configure its crashing pls how to fix

— Minecraft Crash Report ----
// You're mean.

Time: 7/21/21, 9:54 PM
Description: Rendering screen

java.lang.NullPointerException: Cannot invoke "java.awt.image.BufferedImage.getWidth()" because "☃" is null
at dud.b(SourceFile:176)
at dud.a(SourceFile:47)
at dsq.a(SourceFile:188)
at dsq.b(SourceFile:168)
at dwy.a(SourceFile:67)
at eaq.a(SourceFile:107)
at dsx.a(SourceFile:208)
at enb.a(GameRenderer.java:1272)
at dvp.f(SourceFile:1112)
at dvp.e(SourceFile:728)
at net.minecraft.client.main.Main.main(SourceFile:217)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:159)
at net.minecraft.launchwrapper.Launch.main(Launch.java:30)

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

– Head –
Thread: Render thread
Stacktrace:
at dud.b(SourceFile:176)
at dud.a(SourceFile:47)
at dsq.a(SourceFile:188)
at dsq.b(SourceFile:168)
at dwy.a(SourceFile:67)
at eaq.a(SourceFile:107)
at dsx.a(SourceFile:208)

– Screen render details –
Details:
Screen name: dsx
Mouse location: Scaled: (303, 53). Absolute: (606.000000, 107.000000)
Screen size: Scaled: (479, 504). Absolute: (958, 1008). Scale factor of 2.000000

– Last reload –
Details:
Reload number: 1
Reload reason: initial
Finished: Yes
Packs: Default, Forgotten Mansion Resource pack (Important)
Stacktrace:
at dvx.a(SourceFile:49)
at dvp.c(SourceFile:2406)
at dvp.e(SourceFile:747)
at net.minecraft.client.main.Main.main(SourceFile:217)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:159)
at net.minecraft.launchwrapper.Launch.main(Launch.java:30)

– System Details –
Details:
Minecraft Version: 1.17.1
Minecraft Version ID: 1.17.1
Operating System: Windows 10 (amd64) version 10.0
Java Version: 16.0.1, Microsoft
Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft
Memory: 627410800 bytes (598 MiB) / 1509949440 bytes (1440 MiB) up to 2147483648 bytes (2048 MiB)
CPUs: 12
Processor Vendor: GenuineIntel
Processor Name: Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz
Identifier: Intel64 Family 6 Model 158 Stepping 10
Microarchitecture: Coffee Lake
Frequency (GHz): 3.19
Number of physical packages: 1
Number of physical CPUs: 6
Number of logical CPUs: 12
Graphics card #0 name: NVIDIA GeForce GTX 1070 Ti
Graphics card #0 vendor: NVIDIA (0x10de)
Graphics card #0 VRAM (MB): 4095.00
Graphics card #0 deviceId: 0x1b82
Graphics card #0 versionInfo: DriverVersion=27.21.14.5671
Memory slot #0 capacity (MB): 8192.00
Memory slot #0 clockSpeed (GHz): 2.67
Memory slot #0 type: DDR4
Memory slot #1 capacity (MB): 8192.00
Memory slot #1 clockSpeed (GHz): 2.67
Memory slot #1 type: DDR4
Virtual memory max (MB): 32189.01
Virtual memory used (MB): 24242.63
Swap memory total (MB): 15872.00
Swap memory used (MB): 1682.10
JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
Launched Version: 1.17.1-OptiFine_HD_U_G9_pre29
Backend library: LWJGL version 3.2.2 build 10
Backend API: GeForce GTX 1070 Ti/PCIe/SSE2 GL version 4.6.0 NVIDIA 456.71, NVIDIA Corporation
Window size: 958x1008
GL Caps: Using framebuffer using OpenGL 3.2
GL debug messages:
Using VBOs: Yes
Is Modded: Very likely; Jar signature invalidated
Type: Client (map_client.txt)
Graphics mode: fancy
Resource Packs: vanilla, file/Forgotten Mansion Resource pack (Important)
Current Language: English (US)
CPU: 12x Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz
OptiFine Version: OptiFine_1.17.1_HD_U_G9_pre29
OptiFine Build: 20210714-230040
Render Distance Chunks: 48
Mipmaps: 4
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
Shaders: null
OpenGlVersion: 4.6.0 NVIDIA 456.71
OpenGlRenderer: GeForce GTX 1070 Ti/PCIe/SSE2
OpenGlVendor: NVIDIA Corporation
CpuCount: 12