ERROR: 500 Internal Server Error

no protocol: https%3A%2F%2Fwww.gewina-studium.nl%2F583%2Fvolume%2F10%2Fissue%2F1%2F

RequestURI=/ServeContent?url=https%253A%252F%252Fwww.gewina-studium.nl%252F583%252Fvolume%252F10%252Fissue%252F1%252F

LOCKSS daemon, powered by Jetty