@evergreengolfer this is a theme implementation issue which will be specific to your unique store, theme, config and likely require at least a bit of hands-on time to get it working correctly. Try Shopify support you may get lucky which could work out, but I wouldn’t hold my breath - as I’d see this as one of those things that’s “out of scope” for them to fix.
The simple answer is that to fix it - add aggregateRating field.
The longer answer is that the actual technical implementation to add that will depend on:
- is your theme or existing customizations around schema
- any apps that are generating schema
- any GTM code or any JS that is generating schema
- do you have multiple types of schema like Metadata and JSON-LD?
In most cases I find the quickest fix to get a good (and working!) schema setup is to dig into the theme, read the code and understand what’s going on in context, maybe quick crawl a few pages on ScreamingFrog and check what’s happening, then surgically remove out any schema without breaking stuff. Then replace with an app like JSON‑LD for SEO or Schema Plus for SEO and set it to pull review data from Shopify Product Reviews (SPR). If you already have a good handle on HTML, JSON, Liquid etc, it’s not technically difficult to write your own schema/JSON code to do this yourself, or tweak your own theme. But you need to have a decent understanding of JSON, HTML, Liquid, Shopify etc to DIY, and it’s just time consuming and finicky to get right. These apps give you a really decent head start and give you really robust schema.
If you just install one of those apps, you may actually get lucky and it could work, depends on your theme etc. But it’s quite likely they will end up creating duplicate schema, not a major but still not an perfect fix.
In saying all that, if you want to edit your own theme code, can you please find the existing schema code and paste it in here, then I can try add some suggestions. If you are unable to even find it, well frankly, I’d be concerned that you should be editing your own code at all… but start exploring around the product templates.