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:19-epub-12231-7
	https://epub.ub.uni-muenchen.de/12231/ RESTEASY004655: Unable to invoke request: org.apache.http.conn.ConnectTimeoutException: Connect to epub.ub.uni-muenchen.de:443 [epub.ub.uni-muenchen.de/141.84.147.156] failed: Connect timed out

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