If a URL alias exists for a node that does not, and you set up a redirect from the alias to somewhere else, the redirect does not apply. Instead you hit a 404 error. This happened to us in after a site migration where a contact form changed from a node to a regular form, so the alias came in when we bulk imported the aliases from the old site but the node did not.
This is a bit of an edge case since normally aliases are deleted when a node is deleted. But, if for some reason this didn't happen then we end up with this issue.
- Create an alias for a non-existent node, either manually in the db or with something like
https://www.drupal.org/project/path_alias_import →
- Create a redirect from /that-alias to /somewhere-else
- Navigate to /somewhere-else
Add handling for redirects from 404 pages, and potentially other 4xx pages. I'd image this might be a small change to RedirectRequestSubscriber.php
Closed: duplicate
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
Seems to be an early report overlapping with 🐛 Redirects from aliased paths aren't triggered Needs work . Since this is an active issue in MR status over there, let us mark this one here as duplicate, because it pops up firsto n Google. The other issue started 2017 and is in almost RTBC, so I think it's OK.