CONSTRUCT fails when N-Triples are requested

[ktk]

This query works:

curl https://qlever.cs.uni-freiburg.de/api/wikidata -X POST -H 'Accept: text/turtle' -H 'Content-Type: application/x-www-form-urlencoded;charset=UTF-8' --data-raw 'query=CONSTRUCT+%7B+%3Fs+%3Fp+%3Fo+.+%7D+WHERE+%7B+%3Fs+%3Fp+%3Fo+.+%7D+LIMIT+1&send=100'

the same query with application/n-triples fails:

curl https://qlever.cs.uni-freiburg.de/api/wikidata -X POST -H 'Accept: application/n-triples' -H 'Content-Type: application/x-www-form-urlencoded;charset=UTF-8' --data-raw 'query=CONSTRUCT+%7B+%3Fs+%3Fp+%3Fo+.+%7D+WHERE+%7B+%3Fs+%3Fp+%3Fo+.+%7D+LIMIT+1&send=100'

error:

{
    "exception": "Assertion `ad_utility::contains(supportedTypes, mediaType)` failed. Please report this to the developers. In file \"/local/data-ssd/qlever/qlever-code/src/engine/ExportQueryExecutionTrees.cpp \" at line 893",
    "query": "CONSTRUCT { ?s ?p ?o . } WHERE { ?s ?p ?o . } LIMIT 1",
    "resultsize": 0,
    "status": "ERROR",
    "time": {
        "computeResult": 17,
        "total": 17
    }
}

Reported by a colleague of mine, he says it's a regression since d7ec9be