ionic-cli: ionic serve not starting local dev server

this is the output:

mymac$ ionic serve
[INFO] Starting app-scripts server: --address 0.0.0.0 --port 8100 --livereload-port 35729 - Ctrl+C to cancel
[17:42:10]  watch started ... 
[17:42:10]  build dev started ... 
[17:42:10]  clean started ... 
[17:42:10]  clean finished in 1 ms 
[17:42:10]  copy started ... 
[17:42:10]  transpile started ... 
[17:42:13]  transpile finished in 2.85 s 
[17:42:13]  preprocess started ... 
[17:42:13]  deeplinks started ... 
[17:42:13]  deeplinks finished in 13 ms 
[17:42:13]  preprocess finished in 14 ms 
[17:42:13]  webpack started ... 
[17:42:13]  copy finished in 3.08 s 

mymac$ ionic info

cli packages: (/usr/local/lib/node_modules)

    @ionic/cli-utils  : 1.9.2
    ionic (Ionic CLI) : 3.9.2

local packages:

    @ionic/app-scripts : 2.1.4
    Ionic Framework    : ionic-angular 3.6.0

System:

    Node : v8.1.1
    npm  : 5.0.4 
    OS   : macOS High Sierra

Looking for the local server on my Chrome at the address http://127.0.0.1:8100 but nothing is appearing