entire site goes blank(white)

hello everyone,
I developed a website(etougebe-baptistchurch.org) using CI and it was running fine until 2 days ago that i discovered that on of the pages etougebe-baptistchurch.org/events showed only a blank page.while tryingto figure out the problem with the code(if any) the rest of the pages became white too. can someone help me? am stressed up

Thanks in advance