I am facing Following build time error in my next.js app with TS

Question

./app/api/auth/register/route.ts 58:1 Error: <Document /> from next/document should not be imported outside of pages/_document.js. See: https://nextjs.org/docs/messages/no-document-import-in-page @next/next/no-document-import-in-page

This kind of error I am facing during build time although I have no any file imported _document.js in my API route then why I have this issue?

It is my project Directory

I am using next.js 14.01