Hi @dsdevteam
Thanks for reaching out to us and also for using the Yoast SEO plugin.
From your message, I understand that you are noticing an error Missing field ‘item’ in itemListElement. So I checked the page via 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 Google Analytics, occurred 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() be used twice on the respective page files by your theme developer, or whether 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 of the errors within the theme. As other plugin codes 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 that <head> and all the codes are outputting twice.
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 feel uncomfortable doing this yourself or if this does not solve your issue, our Yoast SEO Premium plugin comes with one year of (technical) support.
I hope this guides you in the right direction.