404 Error found for email pages

I am a WordPress web developer, using Kadence Pro I developed a site (link removed) about 1 year ago. Now I am facing an issue while I perform audit through Semrush, I found 404 pages equal to my whole site pages in broken links.
During Screaming Frog Audit there are no issues found like this. I am a bit confused about how to find and tackle this issue

Probably Permalink issue.