Error 404 Document /db/apps/pubs/pb-pdf.html%20 not found

HTTP ERROR 404 Document /db/apps/pubs/pb-pdf.html%20 not found

URI:	/exist/apps/pubs/pb-pdf.html%20
STATUS:	404
MESSAGE:	Document /db/apps/pubs/pb-pdf.html%20 not found
SERVLET:	EXistServlet