Blank webappbuilder page when starting node.js

[DouglasGuess]

I’ll set the stage…  within my AGOL for Organizations account, I created a Web Map (name: GIS Viewer - which is the web map I’m using within my Web AppBuilder application).  I downloaded the Web AppBuilder for ArcGIS (Developer Edition) and went through the initial “Get Started” page (https://developers.arcgis.com/web-appbuilder/guide/getstarted.htm ).  I started Node.js (which spawned Web AppBuilder in browser), specified my portal (AGOL for Org. url), and was then prompted for an App ID.  After some reading, I created a Web Mapping Application in AGOL (name: GIS Viewer_WAB) and Registered the app and set the redirect URI’s, then copied the App ID into the text box within the Web AppBuilder.  Everything worked fine for a while.

Now, within AGOL, the Web Mapping Application (GIS Viewer_WAB) was deleted.  I deleted it because I was having some issues with basemaps and thought it was the app and wanted to start from scratch.  I thought I could delete it and create a new one, register that app in AGOL and then update the App ID in the signininfo.json file located within the  \arcgis-web-appbuilder-1.0\server folder on my machine. Now, when I start Node.js, the Web AppBuilder page within the browser is blank. 

Anyone have some thoughts on what could/should be done to be able to view the stemapp again via Node.js?

Thanks,

Doug

[RobertScheitlin__GISP]

Doug,

   You can basically reset WAB by deleting the contents in the server\db folder.

[RebeccaStrauch__GISP]

Some suggestions can be found Tips and Observations for getting Web AppBuilder -  Developer Edition Installed‌

I have some hints about refreshing the WAB and creating and connecting to the app Id.  As Robert suggested, sometimes it's easier to just start up a new WAB folder.  But you should also be able to copy the site you setup, and not lose the work you did.

[DouglasGuess]

Thanks for replying Robert.  Ok, within my server\db folder I see apps and repoitems.  I deleted those two files, restarted Node.js and I'm still getting a blank WAB page (http://[local machine]:3344/webappbuilder/

[RobertScheitlin__GISP]

Doug,

   Try renaming the signininfo.json to signininfo__.json and try to start WAB again.

[AndrewParnell]

This solution worked for me rather than clearing out the db folder. Can you tell me why?

Many thanks,

Andrew

[RobertScheitlin__GISP]

Andrew,

   which comment worked for you?

[AndrewParnell]

Hi Robert,

Thanks for the quick response.

Yes your solution with the renaming signininfo.json to signininfo__.json

Cheers,

Andrew

[RobertScheitlin__GISP]

Andrew,

    I am actually not sure why this happens. But renaming (or you could just delete it) the signininfo.json forces WAB to require you to re-approve the app with AGOL.

[AndrewParnell]

It's very odd as the contents appear identical in the two files as well.

Thanks for your help!

Andrew