Experience Builder brings 'Blank Page' ExB v12.1

[aperi]

Hi all,

I have a base ArcGIS Enterprise 12.1 single machine deployment (Portal, Server, and Data Store on one box). The Portal home page, Map Viewer, and Content all load normally, but when I launch Experience Builder from the app launcher (https://<machine>/portal/apps/experiencebuilder/), the page comes up completely blank. No error message, no spinner, just an empty screen that stays stuck.

What I've tried so far:
- Cleared browser cache and tested in an incognito window and a second browser: same result
- Confirmed the rest of Portal is healthy 
Environment:
- ArcGIS Enterprise 12.1, single machine base deployment
- Accessing through the Web Adaptor, currently over HTTP (not yet on HTTPS with a CA-signed cert)

Has anyone else hit a blank Experience Builder page on 12.1? Wondering if this is a known issue with the release, or a resource failing to load. Any pointers on which logs or configs to check would be much appreciated.

Screenshot of the blank page is attached.

Thanks!

[Ke_Xu]

Hi @aperi,

What error do you see in the browser console? Does the same issue occur when creating other apps, such as an Instant App?

Thanks,

Ke

[davidround]

Yes. Blank screen when launching any experience or template from experience builder. Looking in dev tools it's failing to load some javascript stuff. I can't fix it 😞

[Ke_Xu]

 @davidround, could you please capture the error messages from the browser console? Also, please submit a Support ticket for this issue. Thanks.