core_enrol_get_course_enrolment_methods method returns nothing

I am trying to get a list of enrollment methods for a course. Using the example POST below.

https://10.1.19.118/webservice/rest/server.php?wstoken={mytoken}&wsfunction=core_enrol_get_course_enrolment_methods&moodlewsrestformat=json&courseid=2

I am getting a blank object in return "[]"

The course has the enrollment methods assigned to it. Any ideas would be helpful.