Parse.com - 使用内部查询获得400个错误请求

Question

我正在执行多级内部查询，但它给了我一个带有find（）函数的400错误请求，我做错了什么？

    var EducationVenue = Parse.Object.extend("EducationVenue");
    var EducationVenueRoom = Parse.Object.extend("EducationVenueRoom");
    var EducationLessonSet = Parse.Object.extend("EducationLessonSet");
    var EducationLesson = Parse.Object.extend("EducationLesson");

    var eduLessonSetQuery = new Parse.Query(EducationLessonSet);
    eduLessonSetQuery.matchesQuery("educationListingId", eduListingQuery);

    var eduLessonQuery = new Parse.Query(EducationLesson);
    eduLessonQuery.matchesQuery("educationLessonSetId", eduLessonSetQuery);
    eduLessonQuery.include('educationVenueRoomId.educationVenueId');

    $scope.coursesAtLocations = [];
    eduLessonQuery.find({
      success: function(coursesAtLocations) {
        for (var i = 0; i < coursesAtLocations.length; i++) {
            $scope.coursesAtLocations.push(coursesAtLocations[i]);
            console.log('c at loc' + coursesAtLocations[i]);
        }

      }
    });

原因是“查询有太多嵌套查询”，对此更方便的解决方法是什么？