Cannot Update Valheim Server

OS Name/Version: Ubuntu 20.04.5 LTS

Product Name/Version: 2.4.0.10

Problem Description: Cannot update Valheim server.

Steps to reproduce:

  • Step 1 - Install a fresh Valheim instance.
  • Step 2 - Manage instance.
  • Step 3 - Click update.

Actions taken to resolve so far:

Installing a fresh Valheim server, I cannot seem to perform he initial server update/download. I get the following errors.

threadtools.cpp (3294) : Assertion Failed: Illegal termination of worker thread ‘Thread(0x0x57ad5320/0x0xf76d3b’

Redirecting stderr to ‘/home/amp/Steam/logs/stderr.txt’

ILocalize::AddFile() failed to load file “public/steambootstrapper_english.txt”.

[ 0%] Checking for available update…

KeyValues Error: LoadFromBuffer: missing { (current key: ‘<!DOCTYPE’) in file manifest [offset: 15]

Bad expression token: [Bad expression token: […/tier1/KeyValues.cpp (2925) : Assertion Failed: Error while parsing text KeyValues for resource manifest

[----] Verifying installation…

[ 0%] Downloading Update…

[ 0%] Checking for available update…

KeyValues Error: LoadFromBuffer: missing { (current key: ‘<!DOCTYPE’) in file manifest [offset: 15]

Bad expression token: [Bad expression token: […/tier1/KeyValues.cpp (2925) : Assertion Failed: Error while parsing text KeyValues for resource manifest

[----] !!! Fatal Error: Steamcmd needs to be online to update. Please confirm your network connection and try again.

threadtools.cpp (3294) : Assertion Failed: Illegal termination of worker thread ‘Thread(0x0x5790b320/0x0xf76bdb’