UE[5.1] - Map Missing on package build(Disconnects Client)

Development Programming & Scripting Blueprint
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1

I’m having an issue in UE5.1 when packaging build the Client is still able to connect to the server on a different computer into the Lobby, however when they travel over to the Game Map I get this error. I’ve made sure to add all the needed maps (2 maps, menu and gamescene) into the included packaged maps in the project settings but still get this error. Here the log dump

LogNet: NMT_CloseReason: (Server Disconnect Reasons) ???
LogNet: - MissingLevelPackage
LogNet: UChannel::ReceivedSequencedBunch: Bunch.bClose == true. ChIndex == 0. Calling ConditionalCleanUp.
LogNet: UChannel::CleanUp: ChIndex == 0. Closing connection. [UChannel] ChIndex: 0, Closing: 0 [UNetConnection] RemoteAddr: ???:7777, Name: IpConnection_2, Driver: GameNetDriver IpNetDriver_2, IsServer: NO, PC: BP_PlayerController_Default_C_1, Owner: BP_PlayerController_Default_C_1, UniqueId: NULL:Kompletti7-780A4FAB4684E608F0655EB31789F469
LogNet: UNetConnection::Close: [UNetConnection] RemoteAddr: ???:7777 Name: IpConnection_2, Driver: GameNetDriver IpNetDriver_2, IsServer: NO, PC: BP_PlayerController_Default_C_1, Owner: BP_PlayerController_Default_C_1, UniqueId: NULL:Kompletti7-780A4FAB4684E608F0655EB31789F469, Channels: 10, Time: 2023.07.02-20.18.14
LogNet: UNetConnection::SendCloseReason:
LogNet: - Result=ControlChannelClose, ErrorContext=“ControlChannelClose”
LogNet: UChannel::Close: Sending CloseBunch. ChIndex == 0. Name: [UChannel] ChIndex: 0, Closing: 0 [UNetConnection] RemoteAddr: ???:7777, Name: IpConnection_2, Driver: GameNetDriver IpNetDriver_2, IsServer: NO, PC: BP_PlayerController_Default_C_1, Owner: BP_PlayerController_Default_C_1, UniqueId: NULL:Kompletti7-780A4FAB4684E608F0655EB31789F469
LogNet: Error: UEngine::BroadcastNetworkFailure: FailureType = ConnectionLost, ErrorString = Your connection to the host has been lost., Driver = GameNetDriver IpNetDriver_2
LogNet: Warning: Network Failure: GameNetDriver[ConnectionLost]: Your connection to the host has been lost.
LogNet: NetworkFailure: ConnectionLost, Error: ‘Your connection to the host has been lost.’
LogNet: Browse: /Game/Levels/Map_Menu?closed
LogNet: Connection failed; returning to Entry
LogLoad: LoadMap: /Game/Levels/Map_Menu?closed
LogWorld: BeginTearingDown for /Game/Levels/UEDPIE_0_Map_001_Voxel
LogNet: World NetDriver shutdown IpNetDriver_2 [GameNetDriver]
LogNet: DestroyNamedNetDriver IpNetDriver_2 [GameNetDriver]
LogExit: GameNetDriver IpNetDriver_2 shut down
LogVoxel: Unloading world

2

I got the same problem in my project , to fix it , first i have to mention im using level streaming in my base game map(not world partition) then i opened my BaseGame map and by looking in the “Levels” panels i make sure all the levels listed there were included into the included packaged maps in the project settings . So now going from my lobby into my BaseGame map will work without kicking users from multiplayer session and will let levels to load properly