Ecommerce Shopify WordPress Discussion

How to fix this error "custom query parameter not defined in target url"?

everyone! I have a wordpress site and I've tested it by using Rich Results Test. But an error occurred in Sitelinks searchbox item. Detailed error is like this. "custom query parameter not defined in target url" I've attached screenshot. enter image description here enter image description here I thought this might be caused by a plugin. So I deactived all plugins one by one and tried test again, but I couldn't find the reason. How can I fix this problem? Thanks for your consideration.
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