UI Builder Page Crashed

[V_ Tran]

I've been working on a UIB page variant for several days and the whole page just crashed on me today when I tried to add and remove a calendar component. Not sure if this is related to the calendar component but at the moment this page variant just loads a blank page. If I select 'Edit page variant settings' I  see a blank dialog modal with the loading animation. I'm wondering if there's a way to restore this page variant to an older version. Also, there's no way to delete this page in UIB since I can't edit the variant settings. I'm seeing the error below in the console:

- Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'macroponentInstance')...

[V_ Tran · Accepted solution]

Ok phew..the escape hatch is you can go to the UX Macroponent Definitions table to edit the composition JSON for that page variant. In my case, I just remove the calendar component I added earlier.