With this function, the resolver checks all associated URLs and marks them either with a green tick or, in the event of an error, with a red cross. Users are redirected to the first URL marked in green.

Analyse	urn:nbn:de:bvb:29-opus4-84063
	https://open.fau.de/handle/openfau/8406 RESTEASY004655: Unable to invoke request: org.apache.http.conn.HttpHostConnectException: Connect to open.fau.de:443 [open.fau.de/131.188.200.15] failed: Connection refused
	http://d-nb.info/1132817005/34 STATUS : 301 → Redirecting to : https://d-nb.info/1132817005/34
	https://d-nb.info/1132817005/34 STATUS : 404 → Skipping : https://d-nb.info/1132817005/34

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