nDisplay can not work with pixelstreaming

I create a third person test case using engine template,then i test with next step:
1:place a NDC_Basic.ndisplay(from Templates/TP_nDisplayBP/Content/ExampleConfigs) to my test scene.
2: I enable pixeltreaming, no ndisplay, then start pragram with cmdline xxx.exe -AudioMixer -PixelStreamingIP=localhost -PixelStreamingPort=8888 it can work normaly , I can view the video in a another pc’s web brower.
3: I enable ndisplay(config and start with swithcboard,also append args -AudioMixer -PixelStreamingIP=localhost -PixelStreamingPort=8888 in swithboard ),it can show nomaly in local display screen,but can not show in web brower(black), however when i operat mouse in another pc’s webbrower , it can nomaly operate the role and camera view in my local scene.
i want to use nDisplay work with pixelstreaming together

switchboard node_0: cmdline:

F:\Source\TestVideo_d\Binaries\Win64\TestVideo_d-Win64-Debug.exe “.” -game -messaging -dc_cluster -nosplash -fixedseed -NoVerifyGC -noxrstereo -xrtrackingonly -RemoteControlIsHeadless -AudioMixer -PixelStreamingIP=localhost -PixelStreamingPort=8888 -StageFriendlyName=Node_0 -MaxGPUCount=2 -dc_cfg=“C:\Users\ADMINI~1\AppData\Local\Temp\ndisplay.ndisplay” -dx12 -dc_dev_mono -dc_node=Node_0 Log=Node_0.log -ini:Engine:[/Script/Engine.Engine]:GameEngine=/Script/DisplayCluster.DisplayClusterGameEngine,[/Script/Engine.Engine]:GameViewportClientClassName=/Script/DisplayCluster.DisplayClusterViewportClient,[/Script/Engine.UserInterfaceSettings]:bAllowHighDPIInGameMode=True -ini:Game:[/Script/EngineSettings.GeneralProjectSettings]:bUseBorderlessWindow=True -unattended -ExecCmds=“DisableAllScreenMessages” -fullscreen