Could not determine operation type (Query or Update).

[rat10]

I get the following error from a Qlever UI Docker container that was created 3 days ago:

Error processing operation
Could not determine operation type (Query or Update). Please [report](https://github.com/ad-freiburg/qlever-ui/issues/new) this operation to us.

It seems that prefix declarations cause the problem. The following query returns the aforementioned error:

PREFIX : <http:/example.org>
SELECT * WHERE {
      ?s ?p ?o . 
}

https://qlever.cs.uni-freiburg.de/wikidata/aIJvR9

whereas this query returns all triples in the dataset:

SELECT * WHERE {
      ?s ?p ?o . 
}

This is the log of the Qlever UI container:

2025-02-24 15:48:24 [2025-02-24 14:48:24 +0000] [1] [INFO] Starting gunicorn 22.0.0
2025-02-24 15:48:24 [2025-02-24 14:48:24 +0000] [1] [INFO] Listening at: http://0.0.0.0:7000 (1)
2025-02-24 15:48:24 [2025-02-24 14:48:24 +0000] [1] [INFO] Using worker: sync
2025-02-24 15:48:24 [2025-02-24 14:48:24 +0000] [7] [INFO] Booting worker with pid: 7
2025-02-24 15:48:24 [2025-02-24 14:48:24 +0000] [14] [INFO] Booting worker with pid: 14
2025-02-24 15:48:24 [2025-02-24 14:48:24 +0000] [15] [INFO] Booting worker with pid: 15

[hannahbast]

Uh-oh, that is from the recently merged #126

@Qup42 Can you have a look? I expect there to be an easy fix.