Server travel broken? 5.3.1 crash

Development Programming & Scripting Multiplayer & Networking
,
1

Trying to servertravel from one map to another and getting this error.

[2023.11.24-00.44.59:310][649]LogWindows: Error: === Critical error: ===
[2023.11.24-00.44.59:310][649]LogWindows: Error: 
[2023.11.24-00.44.59:310][649]LogWindows: Error: Assertion failed: NumDormantObjectsPerConnectionRef > 0 [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\NetworkObjectList.cpp] [Line: 350] 
[2023.11.24-00.44.59:310][649]LogWindows: Error: 
[2023.11.24-00.44.59:310][649]LogWindows: Error: 
[2023.11.24-00.44.59:310][649]LogWindows: Error: 
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ff759450ecd Main_008.exe!UNetConnection::FlushDormancy() []
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ff7594d8b4a Main_008.exe!UNetDriver::FlushActorDormancyInternal() []
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ff7594d8862 Main_008.exe!UNetDriver::FlushActorDormancy() []
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ff75871f6c8 Main_008.exe!AActor::FlushNetDormancy() []
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ff758720478 Main_008.exe!AActor::ForceNetUpdate() []
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ff759870c55 Main_008.exe!APlayerController::SeamlessTravelFrom() []
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ff759054392 Main_008.exe!AGameMode::HandleSeamlessTravelPlayer() []
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ff75906426d Main_008.exe!AGameMode::PostSeamlessTravel() []
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ff759fe5b96 Main_008.exe!FSeamlessTravelHandler::Tick() []
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ff759e9f946 Main_008.exe!UEngine::TickWorldTravel() []
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ff759081c6b Main_008.exe!UGameEngine::Tick() []
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ff75a651493 Main_008.exe!FEngineLoop::Tick() []
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ff75a6691cc Main_008.exe!GuardedMain() []
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ff75a6692aa Main_008.exe!GuardedMainWrapper() []
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ff75a66c156 Main_008.exe!LaunchWindowsStartup() []
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ff75a67bd44 Main_008.exe!WinMain() []
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ff75de3086a Main_008.exe!__scrt_common_main_seh() [D:\a_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
[2023.11.24-00.44.59:310][649]LogWindows: Error: [Callstack] 0x00007ffa6d9b7344 KERNEL32.DLL!UnknownFunction []
[2023.11.24-00.44.59:310][649]LogWindows: Error: 
[2023.11.24-00.44.59:317][649]LogExit: Executing StaticShutdownAfterError
[2023.11.24-00.44.59:318][649]LogWindows: FPlatformMisc::RequestExit(1, LaunchWindowsStartup.ExceptionHandler)
[2023.11.24-00.44.59:318][649]LogWindows: FPlatformMisc::RequestExitWithStatus(1, 3, LaunchWindowsStartup.ExceptionHandler)
[2023.11.24-00.44.59:318][649]LogCore: Engine exit requested (reason: Win RequestExit)

I can join games normally. I am using steamcore pro in order to create/join games, but I am not sure why a simple servertravel will not work.

The error happens on the Server’s PC… Any idea?

2

Hey there @Resolve! In a fresh project without the Steamcore Pro utilities attached, does servertravel still fail?

3

I’m unable to test that due to Steam plugins having so many issues already which made me buy this plugin so I didn’t have to build the engine from source and fix the steam connection issues.

I think my problem is related to this bug perhaps. Unreal Engine Issues and Bug Tracker (UE-200510)

4

From the prior reports that seems correct. It seems there’s a targeted fix in the pipe however, though that doesn’t help the situation now especially if you’re trying to avoid rebuilding the source.