Ionic serve open blank window in browser

I’m trying to run my app in the browser using ionic serve --lab and it’s open blank window
and if try to open http://localhost:8106 manullay, app work
any help ?

IMAC-0B0AC7:Doctory anspireagency$ ionic serve --lab
Starting app-scripts server: --address 0.0.0.0 --port 8100 --livereload-port 35729 --dev-logger-port 53703 --nobrowser
--lab - Ctrl+C to cancel
[08:35:25]  watch started ...
[08:35:25]  build dev started ...
[08:35:25]  clean started ...
[08:35:25]  clean finished in 3 ms
[08:35:25]  copy started ...
[08:35:25]  deeplinks started ...
[08:35:26]  deeplinks finished in 196 ms
[08:35:26]  transpile started ...
[08:35:30]  transpile finished in 4.36 s
[08:35:30]  preprocess started ...
[08:35:30]  preprocess finished in 1 ms
[08:35:30]  webpack started ...
[08:35:30]  copy finished in 4.79 s
[08:35:38]  webpack finished in 7.84 s
[08:35:38]  sass started ...
Without `from` option PostCSS could generate wrong source map and will not find Browserslist config. Set it to CSS file path or to `undefined` to prevent this warning.
[08:35:39]  sass finished in 1.63 s
[08:35:39]  postprocess started ...
[08:35:39]  postprocess finished in 16 ms
[08:35:39]  lint started ...
[08:35:39]  build dev finished in 14.23 s
[08:35:40]  watch ready in 14.34 s
[08:35:40]  dev server running: http://localhost:8106/

[OK] Development server running!
     Local: http://localhost:8106
     External: http://192.168.1.137:8106
     DevApp: Doctory@8106 on IMAC-0B0AC7

any help please … ?