[Bug Report] Cannot authenticate via HTTP Basic Auth to access OPDS

[SuperSonicHub1]

Describe the bug
See title.
To Reproduce
Steps to reproduce the behavior:

1. Run `curl "https://username:password@mango.supersonichub1.repl.co/opds"
2. See error

Expected behavior
I see my OPDS feed.

Environment (please complete the following information):

• OS: Ubuntu 20.04.2
• Mango Version: 0.27.0