Critical error "HttpURLConnection cannot be cast to javax.net.ssl.HttpsURLConnection"

[vivien]

 http://qa-dev.w3.org/unicorn/check?ucn_uri=www.w3.org%2F&ucn_lang=en&ucn_task=conformance

[[ class java.lang.ClassCastException? org.w3c.www.protocol.http.HttpURLConnection cannot be cast to javax.net.ssl.HttpsURLConnection org.w3c.unicorn.input.URIInputParameter.check(URIInputParameter.java:79) org.w3c.unicorn.UnicornCall?.check(UnicornCall?.java:86) org.w3c.unicorn.action.ObserveAction?.doGet(ObserveAction?.java:273) javax.servlet.http.HttpServlet?.service(HttpServlet?.java:126) javax.servlet.http.HttpServlet?.service(HttpServlet?.java:103) org.w3c.jigsaw.servlet.ServletWrapper?$ServletRunner?.run(ServletWrapper?.java:775) org.w3c.util.CachedThread?.run(ThreadCache?.java:87) ]]

[sejhpatel@…]

Replying to tgambet:

How did you fix this? any help appreciated.