Error: "Incomplete set of tags received from server. Please contact server operator"

[FFFlakes]

I am the Server owner, as i try to run the Server from my own PC. I set up the Server with the Direwolf20 pack Version 1.12.0.
As this Server is a fresh install from 2hours ago I dont think reinstalling changes the outcome. 

Debug.log can be found here:

https://we.tl/t-bQLNUAcDhj

[FFFlakes]

Same Errror diffrent log: 

https://we.tl/t-7PIRUb6IVn

 

[FFFlakes]

Just installed the newest version of forge, error still persists.

I dont get a newer version of the log though. Otherwise I would have linked it. 
So:
- Server starts
- Player connects
- Error
- Player disconenects

[FFFlakes]

The debug log of the server does not update --> i still have a log from 23:03 CET

Server side:
https://we.tl/t-uGokDtEJSv

Client side:

https://we.tl/t-SjWNJZO3Zv

I now include the latest logs

Edited February 8, 2022 by FFFlakes
explination

[FFFlakes]

I seem to be completly dumb at the moment... My mods folder is stacked full, how would i even start vanilla?

[FFFlakes]

https://we.tl/t-J8P0zXQa3E

let`s try again... i am so incredibly sorry...

 

[FFFlakes]

I went to the FTB App, downloaded the direwolf20 pack version 1.12.0 and gave it a go.

First error: not correct forge version

Downloaded the latest forge version, copy pasted forge version into direwolf20 pack

here i am. seemingly nothing works. I will try a complete reinstall next.

 

[FFFlakes]

https://we.tl/t-7u0h7ZkK5S

This is the error I get when I completly reinstall the pack and change nothing

[FFFlakes]

I downloaded the latest beta version of the direwolf20 pack, and it had a new forge version with it. 

I tried starting the beta variant but there is a bug;

So, my naive brain told me lets try just copy pasting the new forge file it into the old folder, i even rememberd to change the path of the start.bat to the new forge.jar

[FFFlakes]

If I want to choose the install server option and then navigate  to the path provided by the direwolf modpack  it says "There are already files at the target directory"

 

[FFFlakes]

https://we.tl/t-XxkiwqFSjs

After choosing to ignor this warning and letting it install over the old dir

[FFFlakes]

https://we.tl/t-2EV8ExhUjO

I only see it using the newer Version, could you explain where you can see that the old version is used

 

[Luis_ST]

you use the recommended version of Forge,
but you should use the latest version (1.16.5 - 36.2.26)