Xcode 9 running conference app doesn't work

when i try and run the conference app (or any other app) in Xcode 9 i get this in the output console
The app hang at the loading screen

[DEBUG] Did open IPv6 listening socket 5
[INFO] GCDWebServer started on port 8080 and reachable at http://localhost:8080/
2017-09-28 10:50:06.640788-0400 Ionic Conference[2488:1238753] CDVWKWebViewEngine: trying to inject XHR polyfill
2017-09-28 10:50:06.756181-0400 Ionic Conference[2488:1238753] [MC] Lazy loading NSBundle MobileCoreServices.framework
2017-09-28 10:50:06.758041-0400 Ionic Conference[2488:1238753] [MC] Loaded MobileCoreServices.framework
2017-09-28 10:50:06.762688-0400 Ionic Conference[2488:1238753] [MC] System group container for systemgroup.com.apple.configurationprofiles path is /private/var/containers/Shared/SystemGroup/systemgroup.com.apple.configurationprofiles
2017-09-28 10:50:07.115931-0400 Ionic Conference[2488:1238753] CDVWKWebViewEngine will reload WKWebView if required on resume
2017-09-28 10:50:07.116095-0400 Ionic Conference[2488:1238753] Using Ionic WKWebView
2017-09-28 10:50:07.118259-0400 Ionic Conference[2488:1238753] [CDVTimer][handleopenurl] 0.320971ms
2017-09-28 10:50:07.123140-0400 Ionic Conference[2488:1238753] [CDVTimer][intentandnavigationfilter] 4.674017ms
2017-09-28 10:50:07.123413-0400 Ionic Conference[2488:1238753] [CDVTimer][gesturehandler] 0.156045ms
2017-09-28 10:50:07.218665-0400 Ionic Conference[2488:1238753] [CDVTimer][splashscreen] 95.179975ms
2017-09-28 10:50:07.223388-0400 Ionic Conference[2488:1238753] [CDVTimer][statusbar] 4.480958ms
2017-09-28 10:50:07.225543-0400 Ionic Conference[2488:1238753] [CDVTimer][keyboard] 1.900017ms
2017-09-28 10:50:07.225718-0400 Ionic Conference[2488:1238753] [CDVTimer][TotalPluginStartup] 107.883036ms
2017-09-28 10:50:07.287747-0400 Ionic Conference[2488:1238753] refreshPreferences: HangTracerEnabled: 0
2017-09-28 10:50:07.287850-0400 Ionic Conference[2488:1238753] refreshPreferences: HangTracerDuration: 500
2017-09-28 10:50:07.287887-0400 Ionic Conference[2488:1238753] refreshPreferences: ActivationLoggingEnabled: 0 ActivationLoggingTaskedOffByDA:0
2017-09-28 10:50:08.708987-0400 Ionic Conference[2488:1238753] Failed to load webpage with error: Could not connect to the server.

my ionic client infos are:

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

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

global packages:

Cordova CLI : 7.0.1 

local packages:

@ionic/app-scripts : 2.1.4-201709271643
Cordova Platforms  : ios 4.4.0
Ionic Framework    : ionic-angular 3.6.1-201709260434

System:

ios-deploy : 1.9.1 
ios-sim    : 5.0.4 
Node       : v8.4.0
npm        : 5.4.2 
OS         : macOS Sierra
Xcode      : Xcode 9.0 Build version 9A235

Still can’t figure out this problem.
Stuck with the ever loading splash page.
Anybody ever tried to run an ionic app right from Xcode 9 ?

feedback would be appreciated
thanks

turns out you have to run this first

ionic cordova prepare ios

why is this not executed when you run

ionic cordova run ios

??

It actually should be afaik.