Error message

• Notice: Trying to access array offset on value of type null in _webform_render_cc_email() (line 155 of /home/eventcen/public_html/sites/all/modules/webform_constant_contact/webform_constant_contact.inc).
• Warning: count(): Parameter must be an array or an object that implements Countable in cc->get_all_lists() (line 332 of /home/eventcen/public_html/sites/all/modules/constant_contact/class.cc.php).