Valheim application refuses to start

OS Name/Version:Linux Mint 19

Product Name/Version: AMP v2.4.0.10

Problem Description: Cannot start application

I can start the instance with no errors in the logs, but starting the application fails immediately.
Here’s what the console shows:

Mono path[0] = '/home/amp/.ampdata/instances/Moiksu01/Valheim/896660/valheim_server_Data/Managed'
Mono config path = '/home/amp/.ampdata/instances/Moiksu01/Valheim/896660/valheim_server_Data/MonoBleedingEdge/etc'
Preloaded 'libsteam_api.so'
Unable to preload the following plugins:
libparty.so
Initialize engine version: 2020.3.33f1 (915a7af8b0d5)
[Subsystems] Discovering subsystems at path /home/amp/.ampdata/instances/Moiksu01/Valheim/896660/valheim_server_Data/UnitySubsystems
Forcing GfxDevice: Null
GfxDevice: creating device client; threaded=0
NullGfxDevice:
Version: NULL 1.0 [1.0]
Renderer: Null Device
Vendor: Unity Technologies
Begin MonoManager ReloadAssembly
#9 0x007fd02f685051 in dlopen
#10 0x007fd02ef1c28e in mono_dl_open
#11 0x007fd02ee97ecd in mono_jit_info_get_method
#12 0x007fd02ee99017 in mono_lookup_pinvoke_call
#13 0x007fd02eeabf0c in mono_marshal_string_to_utf16
#14 0x007fd02ed6ca82 in mono_set_break_policy
#15 0x007fd02ed514a4 in _init
#16 0x007fd02ed52f1c in _init
#17 0x007fd02ed56dfa in mono_print_method_from_ip
#18 0x007fd02edd6bde in mono_print_thread_dump_from_ctx
#19 0x007fd02edd6f0d in mono_print_thread_dump_from_ctx
#20 0x00000040880393 in (Unknown)
#21 0x00000041d862d8 in System.TimeZoneInfo:TryGetNameFromPath (string,string&)
#22 0x00000041d6aed8 in System.TimeZoneInfo:get_Local ()
#23 0x007fd02ed57cdd in mono_print_method_from_ip
#24 0x007fd02eec7b18 in mono_perfcounter_foreach
#25 0x007fd02eec89c5 in mono_runtime_invoke
#26 0x007fd03130cb62 in scripting_method_invoke(ScriptingMethodPtr, ScriptingObjectPtr, ScriptingArguments&, ScriptingExceptionPtr*, bool)
#27 0x007fd03130ac72 in ScriptingInvocation::Invoke(ScriptingExceptionPtr*, bool)
#28 0x007fd0312eae47 in Coroutine::InvokeMoveNext(ScriptingExceptionPtr*)
#29 0x007fd0312eaa75 in Coroutine::Run(bool*)
#30 0x007fd0312ee1de in MonoBehaviour::TryCreateAndRunCoroutine(ScriptingObjectPtr, ScriptingMethodPtr, Coroutine**)
#31 0x007fd0312ee5b2 in MonoBehaviour::StartCoroutineManaged2(ScriptingObjectPtr)
#32 0x007fd0313ddffe in MonoBehaviour_CUSTOM_StartCoroutineManaged2(ScriptingBackendNativeObjectPtrOpaque*, ScriptingBackendNativeObjectPtrOpaque*)
#33 0x00000041d7aa0e in (wrapper managed-to-native) UnityEngine.MonoBehaviour:StartCoroutineManaged2 (UnityEngine.MonoBehaviour,System.Collections.IEnumerator)
#34 0x007fd02ed57cdd in mono_print_method_from_ip
#35 0x007fd02eec7b18 in mono_perfcounter_foreach
#36 0x007fd02eec89c5 in mono_runtime_invoke
#37 0x007fd03130cb62 in scripting_method_invoke(ScriptingMethodPtr, ScriptingObjectPtr, ScriptingArguments&, ScriptingExceptionPtr*, bool)
#38 0x007fd03130ac72 in ScriptingInvocation::Invoke(ScriptingExceptionPtr*, bool)
#39 0x007fd0312ef201 in MonoBehaviour::InvokeMethodOrCoroutineChecked(ScriptingMethodPtr, ScriptingObjectPtr, ScriptingExceptionPtr*)
#40 0x007fd0312ef322 in MonoBehaviour::InvokeMethodOrCoroutineChecked(ScriptingMethodPtr, ScriptingObjectPtr)
#41 0x007fd0312efbf6 in MonoBehaviour::DelayedStartCall(Object*, void*)
#42 0x007fd031026202 in DelayedCallManager::Update(int)
#43 0x007fd03118c957 in ExecutePlayerLoop(NativePlayerLoopSystem*)
#44 0x007fd03118c912 in ExecutePlayerLoop(NativePlayerLoopSystem*)
#45 0x007fd03118cebe in PlayerLoop()
#46 0x007fd03136abab in PlayerMain(int, char**)
#47 0x007fd02f8a9c87 in __libc_start_main
#48 0x005595ab04d029 in _start

#26-28 and #37-39 are probably the issue since they were highlighted in red but i have no idea what they could mean.

Actions taken to resolve so far:
Restarted instance
Restarted computer

I also saw this error - for me the fix was updating from Ubuntu 18.04 to 20.04. Valheim server requires a few things introduced in newer OSes apparently. Since Mint 19 is based on Ubuntu 18 the fix will be to update to Mint 20. This is not an AMP issue but a Valheim server requirement. Surprises me they require such new OSes (relatively speaking for servers).