Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' he

Summary

Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource

Content

$http({method:'GET'

                    ,url:mcsService.getCustomApiUrl("Test/HelloWorldPeople")

                    ,headers:mcsService.getHttpHeaders()})

                .then(function(response){

                    $scope.output = response.data;

                    console.log( $scope.output);

                 })

                .catch(function(err) {

                    console.log('Error calling endpoint /departments: '+err);

                });

            }

I can't get the output when i connected to it please let me know how to resolve the issue.