following error is shown up after updating to 4.0.6

Warning: Missing argument 1 for DiscussTwitterOAuth::__construct(), called in /home4/pawanhg/public_html/parthverma.com/administrator/components/com_easydiscuss/includes/oauth/consumers/twitter/twitter.php on line 140 and defined in /home4/pawanhg/public_html/parthverma.com/administrator/components/com_easydiscuss/includes/oauth/consumers/twitter/consumer.php on line 71

Warning: Missing argument 2 for DiscussTwitterOAuth::__construct(), called in /home4/pawanhg/public_html/parthverma.com/administrator/components/com_easydiscuss/includes/oauth/consumers/twitter/twitter.php on line 140 and defined in /home4/pawanhg/public_html/parthverma.com/administrator/components/com_easydiscuss/includes/oauth/consumers/twitter/consumer.php on line 71
syntax error, unexpected 'defined' (T_STRING)

Note: pawanverma.com is my trial url.