Ionic serve & ionic serve --lab have not working in 3.19.0

What happened?

ionic serve --lab now opens a new browser window but doesn’t load the app.

If I use http://localhost:8100 I can see the app in the browser, but --lab has stopped working and I HAVE to enter http://localhost:8100

I’ve downgraded but now even v3.19.0 is broken too.

Nothing?

Still not working

Just tried on my machine, no problem, --lab works fine

Maybe something went wrong with your install? Or which node are you using?

Here my ionic info for comparison:

cli packages:

@ionic/cli-utils  : 1.19.1
ionic (Ionic CLI) : 3.19.1

global packages:

cordova (Cordova CLI) : 8.0.0 
Gulp CLI              : CLI version 3.9.1 Local version 3.9.1

local packages:

@ionic/app-scripts : 3.1.8
Cordova Platforms  : android 7.0.0 ios 4.5.4
Ionic Framework    : ionic-angular 3.9.2

System:

Android SDK Tools : 26.1.1
ios-deploy        : 1.9.2 
ios-sim           : 5.0.13 
Node              : v9.4.0
npm               : 5.6.0 
OS                : macOS Sierra
Xcode             : Xcode 9.2 Build version 9C40b 

Environment Variables:

ANDROID_HOME : /Users/my/Library/Android/sdk

Misc:

backend : pro

Here is mine:

[WARN] Error with ./www/lib/ionic/version.json file: FILE_NOT_FOUND, trying 
       ./bower.json.
[WARN] Error with ./www/lib/ionic/version.json file: FILE_NOT_FOUND, trying 
       ./bower.json.

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

@ionic/cli-utils  : 1.19.1
ionic (Ionic CLI) : 3.19.1

global packages:

cordova (Cordova CLI) : 8.0.0 
Gulp CLI              : CLI version 3.9.1 Local version 3.9.1

local packages:

Cordova Platforms : android 7.0.0 ios 4.5.4
Ionic Framework   : ionic1 1.3.4

System:

Node  : v8.9.3
npm   : 5.5.1 
OS    : macOS High Sierra
Xcode : Xcode 9.2 Build version 9C40b 

Environment Variables:

ANDROID_HOME : not set

Misc:

backend : pro

Well according your error msg, you face the exact same problem as you already posted here and solved. Have you try to solve it the same way as you did?

did u try this?

npm i -D -E @ionic/lab
1 Like

Did exactly what you said, it worked great for me.