在JSON.parse中获取“ JSON输入意外结束”

Question

刚收到语法错误，“ JSON.parse的JSON输入意外结束”

var trivia;

var XMLHttpRequest = require("xmlhttprequest").XMLHttpRequest;

var request = new XMLHttpRequest();

request.open('GET', 'https://opentdb.com/api.php?amount=5&category=15&difficulty=easy&type=boolean');

 request.send();

trivia = JSON.parse(request.responseText);

console.log(trivia);