I keep this error

Fatal error: Uncaught exception 'TwitterException' with message 'Basic authentication is not supported' in /home/content/25/5239325/html/admin/twitter/twitter.php:204 Stack trace: #0 /home/content/25/5239325/html/admin/twitter/twitter.php(648): Twitter->doCall('statuses/update...', Array, true) #1 /home/content/25/5239325/html/admin/twitter/autoTweet.php(21): Twitter->updateStatus('New Product Ava...') #2 /home/content/25/5239325/html/admin/includes/modules/update_product.php(89): include_once('/home/content/2...') #3 /home/content/25/5239325/html/admin/product.php(62): require('/home/content/2...') #4 {main} thrown in /home/content/25/5239325/html/admin/twitter/twitter.php on line 204

it just started and i havent changed anything since the last poduct i uploaded,and it worked then.....HELP....