how to configure Redis to digital ocean? cross origin request blocked

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://127.0.0.1:6379/socket.io/?EIO=3&transport=polling&t=1460428305230-0. (Reason: CORS header 'Access-Control-Allow-Origin' missing).

what does it mean? i am new to redis... i actually manage redis on my localhost but when i upload it into digital ocean its not working anymore.. can anyone help me about this? thanks