ERROR: 500 Internal Server Error

no protocol: https%3A%2F%2Fwww.gewina-studium.nl%2F232%2Fvolume%2F3%2Fissue%2F2%2F

RequestURI=/ServeContent?url=https%253A%252F%252Fwww.gewina-studium.nl%252F232%252Fvolume%252F3%252Fissue%252F2%252F

LOCKSS daemon, powered by Jetty