Describe the bug
When using https://flibusta.is/opds as OPDS catalogue, search results in an error:

I wonder if its the problem with OPDS itself or with Foliate

To Reproduce
Steps to reproduce the behavior:

1. Add https://flibusta.is/opds as catalogue
2. Search something

Expected behavior
It would work

Version:

• Foliate version: 3.1.1-1
• OS/Distribution and version: Arch Linux 6.10.9-arch1-2
• Desktop environment: Sway
• Installation method: Pacman