application/n-triples MIME-Type is not supported for CONSTRUCT queries

[aindlq]

Did not find any supported media type in this 'Accept:' header field: "application/n-triples;q=0.7, text/plain;q=0.7". Currently the following media types are supported: application/sparql-results+json, application/sparql-results+xml, application/qlever-results+json, text/tab-separated-values, text/csv, text/turtle, application/octet-stream

From quick look it seems that produced Turtle is equals to NTriples format -

qlever/src/engine/ExportQueryExecutionTrees.cpp

Lines 61 to 65 in d2782a4

	for (const auto& triple : generator) {
	co_yield triple._subject;
	co_yield ' ';
	co_yield triple._predicate;
	co_yield ' ';

So text/turtle actually gives NTriples.