Error message

• Notice: Constant VERSION already defined in require_once() (line 44 of /mnt/webs/b0/76/54570876/htdocs/bnbprod/sites/all/libraries/php-client/bp_lib.php).
• Warning: Cannot modify header information - headers already sent by (output started at /mnt/webs/b0/76/54570876/htdocs/bnbprod/includes/common.inc:2786) in drupal_send_headers() (line 1499 of /mnt/webs/b0/76/54570876/htdocs/bnbprod/includes/bootstrap.inc).
• Error: Call to undefined function rules_invoke_all() in commerce_cart_expiration_cron() (line 13 of /mnt/webs/b0/76/54570876/htdocs/bnbprod/sites/all/modules/commerce_cart_expiration/commerce_cart_expiration.module).