swh-search is up to date with the main swh-storage cluster, while swh-web
currently uses an out-of-date replicauses a replica that is currently lagging behind. This means that search results returned by swh-search may not exist in the storage.
When this happens, the JS code gets a 404 when querying https://archive.softwareheritage.org/api/1/origin/visit/latest/doc/ with an HYML body.
However, it expects to always get a JSON body, causing this crash:
https://sentry.softwareheritage.org/organizations/swh/issues/105105/?referrer=phabricator_plugin
```
SyntaxError: Unexpected token '<', "<!DOCTYPE "... is not valid JSON
at None (./swh/web/browse/assets/browse/origin-search.js:61:66)
at Array.map (<anonymous>)
at call (./swh/web/browse/assets/browse/origin-search.js:61:55)
...
(3 additional frame(s) were not displayed)
```
which means the page gets stuck on the "Checking" spinner