Uncaught Mandrill_Exception: wpMandrill Error: 27 – No support for URL tracking

I am using version 1.33 of wpMandrill and still getting the following error in my website.

Fatal error: Uncaught Mandrill_Exception: wpMandrill Error: 27: Due to changes to our infrastructure, we no longer support URL tracking reports in Mandrill. in /sites/aquantusllc.com/files/wp-content/plugins/wpmandrill/lib/mandrill.class.php:100 Stack trace: #0 /sites/aquantusllc.com/files/wp-content/plugins/wpmandrill/lib/mandrill.class.php(301): Mandrill->request() #1 /sites/aquantusllc.com/files/wp-content/plugins/wpmandrill/wpmandrill.php(894): Mandrill->urls_list() #2 /sites/aquantusllc.com/files/wp-content/plugins/wpmandrill/wpmandrill.php(931): wpMandrill::getRawStatistics() #3 /sites/aquantusllc.com/files/wp-content/plugins/wpmandrill/wpmandrill.php(1037): wpMandrill::getProcessedStats() #4 /sites/aquantusllc.com/files/wp-content/plugins/wpmandrill/wpmandrill.php(1024): wpMandrill::saveProcessedStats() #5 /sites/aquantusllc.com/files/wp-content/plugins/wpmandrill/stats.php(7): wpMandrill::getCurrentStats() #6 /sites/aquantusllc.com/files/wp-content/plugins/wpmandrill/wpmandrill.php(388): require(‘/sites/aquantus.. in /sites/aquantusllc.com/files/wp-content/plugins/wpmandrill/lib/mandrill.class.php on line 100