Certain filters yield 0 results

[oliver-daniel]

Describe the issue: When you click certain map filters, all the pins disappear from the map despite the values showing up in the Django.
Estimated priority (0 = fix ASAfP, 4 = minor quibble): 0!

Reproducible? Yes. it seems to occurs every time when you select certain filters, regardless of device/browser.

Reproduction steps

When you are on the map page and select certain filters, some display properly (the correct number of pins show up) and other times no pins show up. I tried 2 facets and a few values to give you examples.

Tags where when clicked, the issue does happen (map shows NO pins anywhere in the world)
• Language
◦ Afan Oromo
◦ American Sign Language
• Care Offered
◦ Abortion
◦ Accompaniment for survivors
◦ Art therapy
Tags where when clicked, the issue doesn't happen (map shows pins appropriately)
• Language
◦ Access to interpretation services
◦ Access to translation services
◦ Afrikaans
◦ Amharic
• Care Offered
◦ Abortion referrals
◦ Acupuncture
◦ Advocacy
◦ Andrology
◦ Anonymous HIV testing
• I tested on my MacBook Air with Safari and Chrome, as well as on my Samsung phone with Chrome and it was the same.
• MEDIA!!!!!!!! Didn't bother, it's either pins or an empty map, nothing interesting visually.
Expected behaviour (if relevant):
Every filter when selected should show at least 1 pin.
Extra details (if relevant):
• I checked to see if it was only tags that appeared in Django once that did not display pins, bc it seemed like that at first, but it didn't track.
• I have no more ideas to offer on what is causing this. I can't find the connection.

Slack Message

[oliver-daniel]

The ultimate issue at hand is that Django and Meilisearch can get their databases of service details desync'd over time, and if a service is not registered as having a (rare) tag, then the tag will yield zero results.

The defect has been temporarily resolved on the live site, but this desyncing must be addressed.