I have a website running up. I have created a menus in main menu and linked to article. All of a sudden when i click on the menu its displaying an error ( Server Error). I am able to create new articles as well new menus. the menu linked with article layout is not working, and when a menu linked with category layout it displays all the list of the articles in that particular category, but when i click on particular article from list it displays error (Server Error). How can i solve this. Anyones help would be appreciated.