How do I get all teams a user has already joined?

I've been trying like this and I am getting the error I originally mentioned.

@GET("/api/v3/teams/all_team_listings")
       Promise<Object> getMyJoinedTeamsWHeader(@Header("Authorization: Bearer Token") String deviceID, @Header("user") User user);

I have also tried Authorization: Bearer and just Authorization: and other variations but the same error always appears.