Q: Runtime error?

Tried accessing a website that I normally go to, and the words 'server error in '/' application' came up onto my screen. 'An exception occupied while processing your request. Another occurred while executing the custom error page for the first exception. The request has been terminated...'.

Tried clearing the history and website data in my ipad's settings, safari, but still nothing, and this is happening on all my devices, kindles, mobile and notebook PC. What can I do to correct this and get this particular website back onscreen? Doesn't appear to be happening on any other sites....?