Fixing HTML error in older Canvas templates

Dear Canvas Users,

In apps created between December 27, 2020 and February 9 2021, there is a bug in the header reusable element. An HTML element there which is a backup for when the user is on a Hobby plan throws a console error in Chrome when viewing the page.

This doesn’t affect the functionality in any way, but many users have reported this issue and I want to post here in case this helps people resolve it.

Browser console error that users are seeing:

Original setup:

New setup:

Thank you,