Warning: Missing argument 2 for AWPCP_Meta::page_title() in /home2/jrecords/publ

Hi I am new to WP and all the technical stuff behind the website function. Im gaining knowledge as I go but nee help in order to straighten the problem I am havin. I get this error Warning: Missing argument 2 for AWPCP_Meta::page_title() in /home2/jrecords/public_html/wp-content/plugins/another-wordpress-classifieds-plugin/frontend/class-awpcp-meta.php on line 263. My website is http://www.harveyboyentertainment.com I first notice this problem when I updated to 3.9 from 3.8. Could someone tell me how to fix this. Im using a classifed plugin that defines the awpccp