Block child theme error. How do I diagnos this?

Warning: Attempt to read property "content" on null in [something]\app\public\wp-includes\blocks\template-part.php on line73

I am using Blockbase as the main theme and I used the child theme plugin generator. This is occuring when I try to view an archive.html template. Even if I copy the exact code from the parent archive.html theme and add it to my child archive.html theme, this error appears (twice).

Any suggestions on how to resolve this?