So basically I have this problem with joining my server. The whole thing says "Internal Exception: io.netty.handler.codec.DecoderException: io.netty.handler.codec.EncoderException: java.io.UTFDataFormatException: malformed input around byte 97".
Ive got the client log here and the console from the server. My friend also has this problem when joining my lan world.
Client latest.log https://pastebin.com/1QaENQWG
Console, not the whole one https://pastebin.com/1Tre71uQ

post debug log

I dont have debug log

if you playing on CurseForge you need to enable the debug log in the settings

Alr so here we've got the debug log sorry for taking so long btw. I couldnt paste the debug.log stuff into pastebin so I have the file on mega.io.
https://mega.nz/file/qg9SSZib#zMfVcklURRKudMsmPHhspc6k8ynQ3eK-R1tGveWgKIY

If needed dectryption key: zMfVcklURRKudMsmPHhspc6k8ynQ3eK-R1tGveWgKIY

I made a new server on my pc instead bc the other one was on a free online hoster but I still got the same problem. 
Debug log was too big so download it though mega instead.
https://mega.nz/file/HtVj2DDK#EuTrq_aWwaIMxYLsPpCuleF12xRSyJL7h_LnOSUN_10
Key if needed: EuTrq_aWwaIMxYLsPpCuleF12xRSyJL7h_LnOSUN_10

like this? 
REM Forge requires a configured set of both JVM and program arguments.
REM Add custom JVM arguments to the user_jvm_args.txt
REM Add custom program arguments {such as nogui} to this file in the next line before the %* or
REM  pass them to this script directly
java @user_jvm_args.txt @libraries/net/minecraftforge/forge/1.18.2-40.1.0/win_args.txt %* -Dforge.logging.mojang.level=debug -nogui 
pause
 

I found a debug log without adding the command thing but idk if its the right thing.
Debug https://mega.nz/file/G1FCwICb#sQ--yXsx4JnlwviY3DGvTrxVGgJCxWnCSbYgQCQ5Wkg

I didnt get it to work before because it seems like I had accidentally added a space. 
New debug here https://mega.nz/file/29UAjDzQ#dsUtcN7iclmhuaXPftSiGkSNv3lbJ6grLPHrmMDNegg
Decryption key if needed: dsUtcN7iclmhuaXPftSiGkSNv3lbJ6grLPHrmMDNegg
 

So heres what the user_jvm_args.txt looks like!
https://imgur.com/a/bO5kSuT*
I just start my server with double clicking the "run.bat". Inside it it says this.
REM Forge requires a configured set of both JVM and program arguments.
REM Add custom JVM arguments to the user_jvm_args.txt
REM Add custom program arguments {such as nogui} to this file in the next line before the %* or
REM  pass them to this script directly
java @user_jvm_args.txt @libraries/net/minecraftforge/forge/1.18.2-40.1.0/win_args.txt %* -nogui 
pause.
Its pretty normal I think right?

Ye well heres the latest debug.log from the server.
https://mega.nz/file/Kg9QUCzK#Am7gaffmLffqNraRrQgKq52ufO48pt2UHYbi7lMM5lA
Key if needed Am7gaffmLffqNraRrQgKq52ufO48pt2UHYbi7lMM5lA

How can I fix that then? 

Its nothing more you can do then? If you cant find something, thanks for the help so far!

Here i have the first thing that pops up when i launch the server. maybe it has something to do with this? 
https://imgur.com/a/IpvHaHI