cant seem to be able to access xsketch and kdice, always gives me this error Network Error (tcp_error)

A communication error occurred: "Connection refused"
The Web Server may be down, too busy, or experiencing other problems preventing it from responding to requests. You may wish to try again at a later time.

For assistance, contact your network support team.
didnt have this problem in the first day of June neither in the previous months, does anyone have an idea how to fix this

whats weird is gpokr works just fine

Thank you