Hi Micah,
Thanks for reaching out regarding your breadcrumbs.
I checked the page in the Google rich results testing tool and noticed the same error as you have mentioned. When I looked into the source code of the page, I noticed that all the meta tags, even from the Google Tag Manager, are also occurring twice within the source code. Due to these duplicate codes, Google validates both schemas of breadcrumbs as a single one, and due to that, Google is showing the errors for the breadcrumb with the specific error. These duplicate codes and tags would be mostly because of using wp_head() twice on the respective page files by your theme developer. It could also be that the theme which you are using is adding all the tags within the <head></head> twice for the respective pages or else it will be some errors within the theme.
As other plugin meta tags are also occurring twice, can you please contact your theme developer to look into this case? You can search the <head> within the page source code and can find out all the codes that are duplicating.
I will also recommend that you perform a conflict check to find out whether the theme or any plugin is causing the duplication of all the <head> codes within the respective page. The fastest way to rule out any conflict, is to deactivate all non-Yoast plugins and switch to a standard theme like Twenty Twenty.
Please test this on your development or staging site, if you have one. If not, we recommend using the Health Check & Troubleshooting plugin. This plugin has a troubleshooting mode, which does not affect normal visitors to your site.
If you’re unfamiliar with checking for conflicts, we’d like to point you to a step-by-step guide that will walk you through the process: How to check for plugin conflicts
If you do not feel comfortable to do this yourself or if this does not solve your issue, our Yoast SEO Premium plugin comes with one year of (technical) support.
