The 500 error is displayed when clicking certain links from footer

**[Affected Versions]:**
- Firefox Release 82.0.3
- Chrome 87.0.4280.66

**[Affected Platforms]:**
- Windows 10x64

**[Prerequisites]:**
- The https://hubs.mozilla.com/ website is opened.

**[Steps to reproduce]:**
1. Click the "Docs" button from the navigation bar.
2. Scroll to the footer of the page.
3. Click the "Hubs Documentation" link.
5. Observe the behavior.

**[Expected results]:**
- The Hubs Documentation section is displayed.

**[Actual results]:**
- The 500 error is displayed or the page remains in a loading state.

**[Notes]:**
- This issue is also reproducible when clicking the "Spoke Documentation", For Creators", and "For Developers" links.
- In Firefox the page remains in a loading state and on Chrome the 500 error is displayed.
- I was not able to test this issue on MacOS, Linux or mobile devices.
- Attached is a screen recording of the issue:

Reproduce the problem from the Docs button, then test the footer links for Hubs Documentation, Spoke Documentation, For Creators, and For Developers in the listed browsers. Trace each link from the footer to its destination and verify that every documentation section loads instead of showing a 500 error or remaining in a loading state.

Written by the indexing model from the issue text.