Search the Community

Hi guys and gals. Hope you are all doing well. I need some help please which relates to the Search Engines tab. Every time I enable SEO URLs the entire website stops working. When I click on a specific category or product I get the following error. "Not Found The requested URL /example.html was not found on this server. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request." Would somebody please advise as to why this is happening and offer a resolution? It would be much appreciate. I know I'm doing something wrong so your expertise will go a long way to assisting me with this issue. Cheers and thanks in advance.