Same error in all challenge problems

sir today i have tried 3 challenge problems in which common error of exception in thread was coming and it is coming from last 3 days. problem is occuring only in the challenge problem ide,although the same code is running in coding blocks ide and netbeans the link is as https://ide.codingblocks.com/s/114061
kindly look into the matter be it technical isssue or anything else.due dayes for challenge completion is coming near so solve the issue as soon as possible

I had forwarded your query to the support team they are looking into the matter and will be resolved as soon as possible.