• I have searched open and closed issues and pull requests for duplicates, using these search terms:
  • 21.1
  • Oops
• I have checked the latest main branch to see if this has already been fixed, in this file:
  • listings/ch21-web-server/listing-21-07/404.html

URL to the section(s) of the book with this problem: https://doc.rust-lang.org/book/ch21-01-single-threaded.html#listing-21-8

Description of the problem:
The title in the error HTML should be Oops! instead of Hello!: