在公里内解析返回500错误

Question

我正在使用Parse JavaScript SDK来查询我的一个表，而使用withinKilometers的函数每次都给我500个错误。我似乎无法理解为什么。看一下文档，看起来我正确地使用了公里。这是功能：

function getPickupPointsInCircle() {
// initialization call
Parse.initialize(some_key, some_other_key);

// table and query
var Table = Parse.Object.extend(pickupTable);
var query = new Parse.Query(Table);
var point = new Parse.GeoPoint(40.73555, -74.00425);
var radius = 1.00364;
query.withinKilometers("pickup_location", point, radius);

// results
query.find({
    success: function(results) {
        var res = "Number of pickup points: " + results.length + "\n";
        for(i = 0; i < results.length; i++)
            res += results[i].get("pickup_location").longitude+", "+results[i].get("pickup_location").latitude + "\n";
        alert(res);

    },
    error: function(error) {
        alert("Error: " + error.code + " " + error.message);
    }
  });
}