Tested on 2 computers

Configuring realm on minecraft 1.17.1 crashes game

Steps:

Open minecraft java and launch by clicking play

Click on Minecraft Realm

Click on Configure Realm

Game crashes, see report below.

---- Minecraft Crash Report -------- Minecraft Crash Report ----// Surprise! Haha. Well, this is awkward.
Time: 7/21/21, 3:37 PMDescription: 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(SourceFile:874) at dvp.f(SourceFile:1112) at dvp.e(SourceFile:728) at net.minecraft.client.main.Main.main(SourceFile:217)

A detailed walkthrough of the error, its code path and all known details is as follows:---------------------------------------------------------------------------------------
– Head --Thread: Render threadStacktrace: 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: (340, 58). Absolute: (2041.000000, 348.000000) Screen size: Scaled: (427, 240). Absolute: (2560, 1440). Scale factor of 6.000000
– Last reload --Details: Reload number: 1 Reload reason: initial Finished: Yes Packs: DefaultStacktrace: at dvx.a(SourceFile:49) at dvp.c(SourceFile:2406) at dvp.e(SourceFile:747) at net.minecraft.client.main.Main.main(SourceFile:217)
– 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: 784617376 bytes (748 MiB) / 1711276032 bytes (1632 MiB) up to 2147483648 bytes (2048 MiB) CPUs: 20 Processor Vendor: GenuineIntel Processor Name: Intel(R) Core(TM) i9-10900K CPU @ 3.70GHz Identifier: Intel64 Family 6 Model 165 Stepping 5 Microarchitecture: unknown Frequency (GHz): 3.70 Number of physical packages: 1 Number of physical CPUs: 10 Number of logical CPUs: 20 Graphics card #0 name: NVIDIA GeForce RTX 3080 Graphics card #0 vendor: NVIDIA (0x10de) Graphics card #0 VRAM (MB): 4095.00 Graphics card #0 deviceId: 0x2206 Graphics card #0 versionInfo: DriverVersion=27.21.14.6627 Memory slot #0 capacity (MB): 16384.00 Memory slot #0 clockSpeed (GHz): 2.13 Memory slot #0 type: DDR4 Memory slot #1 capacity (MB): 16384.00 Memory slot #1 clockSpeed (GHz): 2.13 Memory slot #1 type: DDR4 Memory slot #2 capacity (MB): 16384.00 Memory slot #2 clockSpeed (GHz): 2.13 Memory slot #2 type: DDR4 Memory slot #3 capacity (MB): 16384.00 Memory slot #3 clockSpeed (GHz): 2.13 Memory slot #3 type: DDR4 Virtual memory max (MB): 75184.03 Virtual memory used (MB): 25852.46 Swap memory total (MB): 9728.00 Swap memory used (MB): 0.00 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 Backend library: LWJGL version 3.2.2 build 10 Backend API: NVIDIA GeForce RTX 3080/PCIe/SSE2 GL version 3.2.0 NVIDIA 466.27, NVIDIA Corporation Window size: 2560x1440 GL Caps: Using framebuffer using OpenGL 3.2 GL debug messages:  Using VBOs: Yes Is Modded: Probably not. Jar signature remains and client brand is untouched. Type: Client (map_client.txt) Graphics mode: fancy Resource Packs:  Current Language: English (US) CPU: 20x Intel(R) Core(TM) i9-10900K CPU @ 3.70GHz