No Release file for Security Update

[Thomas George]

My system is Bookworm installed from the first DVD which was downloaded 
with the checksums and successfully checked.

I commented out the dvd and added to sources.list lines for bookworm, 
bookworm-updates and bookworm-security.

Ran apt-get update

The result was  bookworm InRelease, bookworm-updates InRelease, 
bookworm-secutity Relesse 404 Not Found [IP: 146.75.30.132 80]

Reading package lists     Done

bookwoom-security Release does not have a Release file.

How do I fix this?