Dedicated Server Error

LogInit: Build: ++UE4+Release-4.18-CL-0
LogInit: Engine Version: 4.18.3-0+++UE4+Release-4.18
LogInit: Compatible Engine Version: 4.18.0-0+++UE4+Release-4.18
LogInit: Net CL: 0
LogDevObjectVersion: Number of dev versions registered: 16
LogDevObjectVersion: Dev-Blueprints (B0D832E4-1F89-4F0D-ACCF-7EB736FD4AA2): 10
LogDevObjectVersion: Dev-Build (E1C64328-A22C-4D53-A36C-8E866417BD8C): 0
LogDevObjectVersion: Dev-Core (375EC13C-06E4-48FB-B500-84F0262A717E): 2
LogDevObjectVersion: Dev-Editor (E4B068ED-F494-42E9-A231-DA0B2E46BB41): 20
LogDevObjectVersion: Dev-Framework (CFFC743F-43B0-4480-9391-14DF171D2073): 30
LogDevObjectVersion: Dev-Mobile (B02B49B5-BB20-44E9-A304-32B752E40360): 0
LogDevObjectVersion: Dev-Networking (A4E4105C-59A1-49B5-A7C5-40C4547EDFEE): 0
LogDevObjectVersion: Dev-Online (39C831C9-5AE6-47DC-9A44-9C173E1C8E7C): 0
LogDevObjectVersion: Dev-Physics (78F01B33-EBEA-4F98-B9B4-84EACCB95AA2): 0
LogDevObjectVersion: Dev-Platform (6631380F-2D4D-43E0-8009-CF276956A95A): 0
LogDevObjectVersion: Dev-Rendering (12F88B9F-8875-4AFC-A67C-D90C383ABD29): 20
LogDevObjectVersion: Dev-Sequencer (7B5AE74C-D270-4C10-A958-57980B212A5A): 4
LogDevObjectVersion: Dev-VR (D7296918-1DD6-4BDD-9DE2-64A83CC13884): 0
LogDevObjectVersion: Dev-LoadTimes (C2A15278-BFE7-4AFE-6C17-90FF531DF755): 1
LogDevObjectVersion: Private-Geometry (6EACA3D4-40EC-4CC1-B786-8BED09428FC5): 1
LogDevObjectVersion: Dev-AnimPhys (29E575DD-E0A3-4627-9D10-D276232CDCEA): 12
LogInit: Compiled (64-bit): Feb 23 2018 19:33:03
LogInit: Compiled with Visual C++: 19.00.24215.01
LogInit: Build Configuration: Development
LogInit: Branch Name: ++UE4+Release-4.18
LogInit: Command line: -log
LogInit: Base directory: D:/Build/WindowsNoEditor/RPGC2018/Binaries/Win64/
LogInit: Installed Engine Build: 0
LogInit: Presizing for max 2097152 objects, including 0 objects not considered by GC, pre-allocating 0 bytes for permanent pool.
LogStreaming: Display: Async Loading initialized: Event Driven Loader: true, Async Loading Thread: false
LogInit: Object subsystem initialized
[2018.02.25-20.05.39:296][ 0]LogInit: Selected Device Profile: [WindowsServer]
[2018.02.25-20.05.39:296][ 0]LogInit: Applying CVar settings loaded from the selected device profile: [WindowsServer]
[2018.02.25-20.05.39:302][ 0]LogInit: Computer: DESKTOP-OK1TDIM
[2018.02.25-20.05.39:302][ 0]LogInit: User: crewd
[2018.02.25-20.05.39:302][ 0]LogInit: CPU Page size=4096, Cores=4
[2018.02.25-20.05.39:302][ 0]LogInit: High frequency timer resolution =3.517755 MHz
[2018.02.25-20.05.39:303][ 0]LogMemory: Memory total: Physical=15.9GB (16GB approx)
[2018.02.25-20.05.39:303][ 0]LogMemory: Platform Memory Stats for WindowsServer
[2018.02.25-20.05.39:303][ 0]LogMemory: Process Physical Memory: 107.74 MB used, 107.74 MB peak
[2018.02.25-20.05.39:303][ 0]LogMemory: Process Virtual Memory: 119.61 MB used, 119.61 MB peak
[2018.02.25-20.05.39:304][ 0]LogMemory: Physical Memory: 4965.07 MB used, 11362.22 MB free, 16327.29 MB total
[2018.02.25-20.05.39:304][ 0]LogMemory: Virtual Memory: 461.26 MB used, 11362.22 MB free, 134217728.00 MB total
[2018.02.25-20.05.39:318][ 0]LogInit: Using OS detected language (ru-RU).
[2018.02.25-20.05.39:318][ 0]LogInit: Using OS detected locale (ru-RU).
[2018.02.25-20.05.39:320][ 0]LogTextLocalizationManager: No localization for ‘ru-RU’ exists, so ‘en’ will be used for the language.
[2018.02.25-20.05.39:320][ 0]LogTextLocalizationManager: No localization for ‘ru-RU’ exists, so ‘en’ will be used for the locale.
[2018.02.25-20.05.39:453][ 0]LogAssetRegistry: FAssetRegistry took 0.0444 seconds to start up
[2018.02.25-20.05.39:566][ 0]LogPackageLocalizationCache: Processed 7 localized package path(s) for 1 prioritized culture(s) in 0.003194 seconds
[2018.02.25-20.05.39:567][ 0]LogPakFile: New pak file …/…/…/RPGC2018/Content/Paks/RPGC2018-WindowsNoEditor.pak added to pak precacher.
[2018.02.25-20.05.39:581][ 0]LogInit: Selected Device Profile: [WindowsServer]
[2018.02.25-20.05.39:702][ 0]LogNetVersion: RPGC2018 , NetCL: 0, EngineNetVer: 2, GameNetVer: 0 (Checksum: 2061649676)
[2018.02.25-20.05.39:803][ 0]LogUObjectArray: 30976 objects as part of root set at end of initial load.
[2018.02.25-20.05.39:803][ 0]LogUObjectAllocator: 6000576 out of 0 bytes used by permanent object pool.
[2018.02.25-20.05.39:804][ 0]LogUObjectArray: CloseDisregardForGC: 0/0 objects in disregard for GC pool
[2018.02.25-20.05.39:819][ 0]LogAndroidPermission: UAndroidPermissionCallbackProxy::GetInstance
[2018.02.25-20.05.39:819][ 0]LogOcInput: OculusInput pre-init called
[2018.02.25-20.05.39:831][ 0]LogEngine: Initializing Engine…
[2018.02.25-20.05.40:074][ 0]LogStats: UGameplayTagsManager::ConstructGameplayTagTree: Construct from data asset - 0.000 s
[2018.02.25-20.05.40:074][ 0]LogStats: UGameplayTagsManager::ConstructGameplayTagTree: GameplayTagTreeChangedEvent.Broadcast - 0.000 s
[2018.02.25-20.05.40:075][ 0]LogInit: Texture streaming: Disabled
[2018.02.25-20.05.40:079][ 0]LogInit: Display: Game Engine Initialized.
[2018.02.25-20.05.40:079][ 0]LogGameplayTags: Display: UGameplayTagsManager::DoneAddingNativeTags. DelegateIsBound: 0
[2018.02.25-20.05.40:091][ 0]LogInit: Display: Starting Game.
[2018.02.25-20.05.40:091][ 0]LogNet: Browse: /Game/Map/City?Name=Player
[2018.02.25-20.05.40:091][ 0]LogLoad: LoadMap: /Game/Map/City?Name=Player
[2018.02.25-20.05.47:106][ 0]LogAIModule: Creating AISystem for world City
[2018.02.25-20.05.47:106][ 0]LogLoad: Game class is ‘ThirdPersonGameMode_C’
[2018.02.25-20.05.47:107][ 0]LogTemp: Display: ParseSettings for GameNetDriver
[2018.02.25-20.05.47:107][ 0]LogTemp: Display: ParseSettings for IpNetDriver_0
[2018.02.25-20.05.47:108][ 0]LogTemp: Display: ParseSettings for GameNetDriver
[2018.02.25-20.05.47:108][ 0]LogInit: SteamSockets: Socket queue 131072 / 131072
[2018.02.25-20.05.47:109][ 0]LogNet: Warning: Failed to init net driver ListenURL: /Game/Map/City?Name=Player: SteamSockets: binding to port 7777 failed (0)
[2018.02.25-20.05.47:110][ 0]LogNet: NetworkFailure: NetDriverListenFailure, Error: ‘SteamSockets: binding to port 7777 failed (0)’
[2018.02.25-20.05.47:110][ 0]LogWorld: Failed to listen: SteamSockets: binding to port 7777 failed (0)
[2018.02.25-20.05.47:110][ 0]LogNet: Error: LoadMap: failed to Listen(/Game/Map/City?Name=Player)
[2018.02.25-20.05.47:113][ 0]LogRHI: NullRHI preferably does not allocate memory on the server. Try to change the caller to avoid doing allocs in when FApp::ShouldUseNullRHI() is true.
[2018.02.25-20.05.47:194][ 0]LogWorld: Bringing World /Game/Map/City.City up for play (max tick rate 0) at 2018.02.25-23.05.47
[2018.02.25-20.05.47:195][ 0]LogTemp: ----Start Creating Server----
[2018.02.25-20.05.47:195][ 0]LogTemp: ----Getting Subsystem----
[2018.02.25-20.05.47:196][ 0]LogTemp: ----Getting Session Interface----
[2018.02.25-20.05.47:196][ 0]LogTemp: ----Creating Settings----
[2018.02.25-20.05.47:196][ 0]LogNetVersion: RPGC2018 1.0.0.0, NetCL: 0, EngineNetVer: 2, GameNetVer: 0 (Checksum: 2215902809)
[2018.02.25-20.05.47:197][ 0]LogTemp: ----Session Created----
[2018.02.25-20.05.47:212][ 0]LogWorld: Bringing up level for play took: 0.100195
[2018.02.25-20.05.47:212][ 0]LogGameMode: Display: Match State Changed from EnteringMap to WaitingToStart
[2018.02.25-20.05.47:213][ 0]LogGameState: Match State Changed from EnteringMap to WaitingToStart
[2018.02.25-20.05.47:214][ 0]LogLoad: Took 7.122856 seconds to LoadMap(/Game/Map/City)
[2018.02.25-20.05.47:214][ 0]LogLoad: (Engine Initialization) Total time: 8.48 seconds
[2018.02.25-20.05.47:214][ 0]LogExternalProfiler: No external profilers were discovered. External profiling features will not be available.
[2018.02.25-20.05.47:218][ 0]LogGameMode: Display: Match State Changed from WaitingToStart to LeavingMap
[2018.02.25-20.05.47:218][ 0]LogGameState: Match State Changed from WaitingToStart to LeavingMap
[2018.02.25-20.05.47:219][ 0]LogNet: Browse: /Game/Map/City?closed
[2018.02.25-20.05.47:219][ 0]LogNet: Failed; returning to Entry
[2018.02.25-20.05.47:220][ 0]LogLoad: LoadMap: /Game/Map/City?closed
[2018.02.25-20.05.53:001][ 0]LogAIModule: Creating AISystem for world City
[2018.02.25-20.05.53:001][ 0]LogLoad: Game class is ‘ThirdPersonGameMode_C’
[2018.02.25-20.05.53:002][ 0]LogNet: CreateNamedNetDriver GameNetDriver already exists as IpNetDriver_0
[2018.02.25-20.05.53:002][ 0]LogNet: NetworkFailure: NetDriverCreateFailure, Error: ‘’
[2018.02.25-20.05.53:003][ 0]LogNet: Error: LoadMap: failed to Listen(/Game/Map/City?closed)
[2018.02.25-20.05.53:063][ 0]LogWorld: Bringing World /Game/Map/City.City up for play (max tick rate 0) at 2018.02.25-23.05.53
[2018.02.25-20.05.53:077][ 0]LogWorld: Bringing up level for play took: 0.072753
[2018.02.25-20.05.53:078][ 0]LogGameMode: Display: Match State Changed from EnteringMap to WaitingToStart
[2018.02.25-20.05.53:079][ 0]LogGameState: Match State Changed from EnteringMap to WaitingToStart
[2018.02.25-20.05.53:079][ 0]LogLoad: Took 5.859193 seconds to LoadMap(/Game/Map/City)
[2018.02.25-20.05.54:518][710]LogOnline: Warning: STEAM: Empty session setting CustomServerName : OnlineServiceAndPing of type String
[2018.02.25-20.05.54:519][710]LogOnline: Warning: STEAM: Server setting ,SESSIONFLAGS:523 overflows Steam SetGameTags call

[2018.02.25-20.05.47:109][ 0]LogNet: Warning: Failed to init net driver ListenURL: /Game/Map/City?Name=Player: SteamSockets: binding to port 7777 failed (0)
[2018.02.25-20.05.47:110][ 0]LogNet: NetworkFailure: NetDriverListenFailure, Error: ‘SteamSockets: binding to port 7777 failed (0)’
[2018.02.25-20.05.47:110][ 0]LogWorld: Failed to listen: SteamSockets: binding to port 7777 failed (0)
[2018.02.25-20.05.47:110][ 0]LogNet: Error: LoadMap: failed to Listen(/Game/Map/City?Name=Player)

I’t Failed to Init net driver + error opening listen level