ERROR: 500 Internal Server Error

no protocol: https%3A%2F%2Fmmj.openlibrary.manchester.ac.uk%2Findex.php%2Fmmj%2Farticle%2Fview%2F18%2Fpdf_9

RequestURI=/ServeContent?url=https%253A%252F%252Fmmj.openlibrary.manchester.ac.uk%252Findex.php%252Fmmj%252Farticle%252Fview%252F18%252Fpdf_9

LOCKSS daemon, powered by Jetty