HTTP ERROR 500 org.springframework.security.web.firewall.RequestRejectedException: The request was rejected because the URL contained a potentially malicious String "%25"

URI:/utdanning/program/268899/Studiet%2520er%2520adgangsregulert%2520med%252040%2520studieplasser,%2520og%2520b
STATUS:500
MESSAGE:org.springframework.security.web.firewall.RequestRejectedException: The request was rejected because the URL contained a potentially malicious String "%25"
SERVLET:dispatcherServlet
CAUSED BY:org.springframework.security.web.firewall.RequestRejectedException: The request was rejected because the URL contained a potentially malicious String "%25"