Fix arguments to 404 response

[emlove]

Types of Changes

• Bug fix.

Contribution

The second argument is the headers field, and it's actually a hash type. Sending an empty array breaks parsing further down the line when trying to look up hash values by key. This change just lets the default argument values be used.

See: https://github.com/rails/rails/blob/c80fa6a0697656a522b7688d116a9a6fca1fc0fd/actionpack/lib/action_dispatch/http/response.rb#L169

Stacktrace:

• [ ] I added tests for my changes.
• [x] I tested my changes locally.
• [x] I agree to the Developer's Certificate of Origin 1.1.