UE5.5 5.6 Failed to connect to SS ws://127.0.0.1:8888

Hi~
I want to stream full editor, and run a PixelStreamingInfrastructure service. Web is successful connect to 127.0.0.1:80, but UE side always throw Failed to connect to SS ws://127.0.0.1:8888 - signalling server may not be up yet. Message: “”. Anyone knows how to fix it?

This is PixelStreamingInfrastructure Log:

Starting Pixel Streaming Signalling Server (Default Config)
View Port: 85 (Frontend Access Port)
UE Port: 8888 (UE Connection Port)
Frontend URL: http://localhost:80

Window will remain open, close window to stop service

Script path: "E:\System\Document\Unreal Projects\5_5"
Calling startup script…

Starting Pixel Streaming Signalling Server (Simple)
View Port (Frontend Access Port): 80
UE Port (UE Connection Port): 8888

Checking directory: “E:\System\Document\Unreal Projects\5_5\CMD..\PixelStreamingInfrastructure\SignallingWebServer”
Starting server…
Frontend URL: http://localhost:80

@epicgames-ps/wilbur@1.0.0 start
node ./dist/index.js --serve --console_messages verbose --log_config --https_redirect --player_port=80 --streamer_port=8888 --serve --console_messages=verbose --http_root=www

[09:18:41.096] info: @epicgames-ps/wilbur v1.0.0 starting…
[09:18:41.097] info: Config: {“log_folder”:“logs”,“log_level_console”:“info”,“log_level_file”:“info”,“streamer_port”:“8888”,“player_port”:“80”,“sfu_port”:“8889”,“serve”:true,“http_root”:“www”,“homepage”:“player.html”,“https”:false,“https_port”:443,“ssl_key_path”:“ssl/key.pem”,“ssl_cert_path”:“ssl/cert.pem”,“https_redirect”:true,“rest_api”:false,“matchmaker”:false,“matchmaker_address”:“127.0.0.1”,“matchmaker_port”:“9999”,“matchmaker_retry”:“5”,“matchmaker_keepalive”:“30”,“public_ip”:“127.0.0.1”,“log_config”:true,“stdin”:false,“console_messages”:“verbose”,“no_config”:false,“config_file”:“config.json”,“no_save”:false}
[09:18:41.103] info: Listening for streamer connections on port 8888
[09:18:41.104] info: Listening for SFU connections on port 8889
[09:18:41.105] info: Http server listening on port 80

This is UE Log:
LogPixelStreamingSS: Connecting to SS ws://127.0.0.1:8888
LogPixelStreamingSS: Failed to connect to SS ws://127.0.0.1:8888 - signalling server may not be up yet. Message: “”
LogPixelStreamingSS: Closing websocket to SS ws://127.0.0.1:8888
LogPixelStreamingSS: Reconnecting to SS ws://127.0.0.1:8888
LogPixelStreamingSS: Failed to connect to SS ws://127.0.0.1:8888 - signalling server may not be up yet. Message: “”
LogPixelStreamingSS: Closing websocket to SS ws://127.0.0.1:8888
LogPixelStreamingSS: Reconnecting to SS ws://127.0.0.1:8888
LogPixelStreamingSS: Failed to connect to SS ws://127.0.0.1:8888 - signalling server may not be up yet. Message: “”
LogPixelStreamingSS: Closing websocket to SS ws://127.0.0.1:8888
LogPixelStreamingSS: Reconnecting to SS ws://127.0.0.1:8888
LogPixelStreamingSS: Failed to connect to SS ws://127.0.0.1:8888 - signalling server may not be up yet. Message: “”
LogPixelStreamingSS: Closing websocket to SS ws://127.0.0.1:8888
LogPixelStreamingSS: Reconnecting to SS ws://127.0.0.1:8888
LogPixelStreamingSS: Failed to connect to SS ws://127.0.0.1:8888 - signalling server may not be up yet. Message: “”
LogPixelStreamingSS: Closing websocket to SS ws://127.0.0.1:8888
LogPixelStreamingSS: Reconnecting to SS ws://127.0.0.1:8888
LogPixelStreamingSS: Failed to connect to SS ws://127.0.0.1:8888 - signalling server may not be up yet. Message: “”
LogPixelStreamingSS: Closing websocket to SS ws://127.0.0.1:8888
LogPixelStreamingSS: Reconnecting to SS ws://127.0.0.1:8888
LogPixelStreamingSS: Failed to connect to SS ws://127.0.0.1:8888 - signalling server may not be up yet. Message: “”
LogPixelStreamingSS: Closing websocket to SS ws://127.0.0.1:8888
LogPixelStreamingSS: Reconnecting to SS ws://127.0.0.1:8888
LogPixelStreamingSS: Failed to connect to SS ws://127.0.0.1:8888 - signalling server may not be up yet. Message: “”
LogPixelStreamingSS: Closing websocket to SS ws://127.0.0.1:8888
LogPixelStreamingSS: Reconnecting to SS ws://127.0.0.1:8888
LogPixelStreamingSS: Failed to connect to SS ws://127.0.0.1:8888 - signalling server may not be up yet. Message: “”

127.0.0.1:80 is work well:

UE Editor Set: