1. curl -sSL https://umod.io/umod-develop.sh | bash /dev/stdin
2. umod update -P 
(It gives me that error i just show you...)
3. umod update -P --force
(it updated successfuly with no error)

When i start the server, it shows the log i sent you before  (not even starts...)

I get this on server start:

03/24/2021 08:30:55: Game server connected

(Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)

8:30 AM [Warning] Unable to purge inactive players with auth driver: protobuf
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)

8:30 AM [Info] Loading user extensions...
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)

8:30 AM [Info] Loading plugins...
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)

8:30 AM [Error] Error while compiling MaxPlayers: Compiler disconnected message was null
Compiler failed: Compiler disconnected message was null
Compiler *.*.*.* was closed unexpectedly
Compiler failed: Compiler *.*.*.* was closed unexpectedly
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)

8:30 AM [Info] No previous version to rollback plugin: MaxPlayers
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)

8:30 AM [Error] Error while compiling ServerRestarter: Compiler disconnected message was null
Compiler failed: Compiler disconnected message was null
Compiler *.*.*.* was closed unexpectedly
Compiler failed: Compiler *.*.*.* was closed unexpectedly
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)

8:30 AM [Info] No previous version to rollback plugin: ServerRestarter
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)

8:30 AM [Error] Database failure: Database disconnected message was null
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)

8:30 AM [Error] Database failure: Database *.*.*.* was closed unexpectedly
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)

After I did
umod u -f
umod l

EDIT:Solved after another
umod u -APf

Niemand

I get this on server start:

After I did
umod u -f
umod l

EDIT:Solved after another
umod u -APf

PS: Sorry Wulf, but this post editor thingy sucks (really unintuitive usage and annoying behaviour), as well as the Documentation link above - which you most likely already know. :/