Can't delete a shortened url

[Anagastes]

Shlink version

4.3.1

PHP version

8.2

How do you serve Shlink

Self-hosted nginx

Database engine

PostgreSQL

Database version

15

Summary

I went from an ancient istans (2.x) gradually up to 4.

I am currently stuck on 4.3.1 because php8.3/4 is not yet available. Only later.

It works so far, but I can't remove an ancient URL.

I get this API response back.

{
  "shortCode": "EIRv0",
  "title": "Short URL not found",
  "type": "https://shlink.io/api/error/short-url-not-found",
  "status": 404,
  "detail": "No URL found with short code \"EIRv0\""
}

But it definitely exists.

+------------+-------+------------------------------+-----------------------+---------------------------+--------------+
| Short Code | Title | Short URL                    | Long URL              | Date created              | Visits count |
+------------+-------+------------------------------+-----------------------+---------------------------+--------------+
| EIRv0      | XX  | https://xx.YYY.xx/EIRv0 | https://yy.XXX.yy | X | 2            |

Any ideas?