How do I fix this without having to create a secondary profile on my PC. The fact that I'm having this error because my main profile for the computer has an ! on the end of it is absolutely ridiculous.

Once I created the secondary profile it was fine and loaded like any normal program. But once I switched back after successfully having it load on the second computer profile, the main one still won't function correctly because of the "!" on the end. 

Looking at the other people suffering from the same thing, they've also said removing any special characters from the names after the fact does not fix it.

The game crashed whilst initializing game
Error: java.lang.ExceptionInInitializerError
Exit Code: -1

Minecraft Crash Report ----
// This doesn't make any sense!

Time: 1/25/21 12:40 AM
Description: Initializing game

java.lang.ExceptionInInitializerError
at ekh.<init>(SourceFile:65)
at djz.<init>(SourceFile:404)
at net.minecraft.client.main.Main.main(SourceFile:177)
Caused by: java.nio.file.FileSystemNotFoundException: C:\Users\SANTA
at com.sun.nio.zipfs.ZipFileSystem.<init>(ZipFileSystem.java:120)
at com.sun.nio.zipfs.ZipFileSystemProvider.newFileSystem(ZipFileSystemProvider.java:117)
at java.nio.file.FileSystems.newFileSystem(FileSystems.java:326)
at java.nio.file.FileSystems.newFileSystem(FileSystems.java:276)
at abm.a(SourceFile:52)
at abm$$Lambda$2134/2099220587.accept(Unknown Source)
at x.a(SourceFile:351)
at abm.<clinit>(SourceFile:41)
... 3 more

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

– Head –
Thread: Render thread
Stacktrace:
at ekh.<init>(SourceFile:65)
at djz.<init>(SourceFile:404)

– Initialization –
Details:
Stacktrace:
at net.minecraft.client.main.Main.main(SourceFile:177)

– System Details –
Details:
Minecraft Version: 1.16.5
Minecraft Version ID: 5a417a81648244aa8ceae8301ef4d20e
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: 1078155120 bytes (1028 MB) / 1744830464 bytes (1664 MB) up to 2147483648 bytes (2048 MB)
CPUs: 8
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: 1.16.5
Backend library: LWJGL version 3.2.2 SNAPSHOT
Backend API: NO CONTEXT
GL Caps:
Using VBOs: Yes
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
CPU: <unknown>