Error With MailChimp Call

WP Error Message: cURL error 28: Operation timed out after 15001 milliseconds with 0 out of -1 bytes received . URL: https://us2.api.mailchimp.com/3.0/lists/fde276eaac/members . Remote Post Args: a:3:{s:7:”headers”;a:1:{s:13:”Authorization”;s:66:”Basic QXBpS2V5OmZlNTI2MGEyZWYxNTgwYmJhODdmZjc5ZGM3NzZhNzk2LXVzMg==”;}s:7:”timeout”;i:15;s:4:”body”;s:228:”{“email_address”:”[email protected]”,”status”:”subscribed”,”merge_fields”:{“FNAME”:”y6V75JGbCbLmY”,”LNAME”:””,”PHONE”:””,”COMPANY”:””,”TOTALSCORE”:0},”tags”:[“QSM Vocab ALL”],”apikey”:”fe5260a2ef1580bba87ff79dc776a796-us2″}”;}