How do I force redirect all 404's (or every page, whether invalid or not) to the homepage?

Question

Currently every invalid page is 500 (Internal Server Error) because I probably messed up with my server block configuration.

I decided to shut down my website a whil

Answer 1

Must use

"fastcgi_intercept_errors on;"

along with the custom redirect location like error_page 404 =200 /index.html or

as above

location @myownredirect {
  return 302 /;
}