I’m afraid that the site and theme are both private. The site is also fixed now. Changing the version in app.yml to stable rather than keeping the default of tests-passed does it so it does imply that this beta version is the issue. The file that throws the error is found at:
connectors/above-site-header/jc-header.hbs (I incorrectly noted it was in above-site-header.hbs in the title. My fault)
Happy to run some checks if that helps but can’t share the site or theme I’m afraid!
Kind Regards,
Quinn Koike