Widget Error

Warning: array_keys() [function.array-keys]: The first argument should be an array in /home/ymaindomain/public_html/mydomain/wp-includes/widgets.php on line 676

Warning: Invalid argument supplied for foreach() in /home/mymaindomain/public_html/mydomain/wp-includes/widgets.php on line 676

Can anyone tell me what this error means? That’s what I got after adding some code on my text widget. That’s what I figured the reason was. Please help.