意外的令牌U发布表达

Question

当使用ajax发布要表达的数据时，我一直收到一个意外的令牌。我检查了变量以确保它们没有未定义，所以我不确定我哪里出错了。

functions.js

$('#saveClause').click(function () {
    var username = document.getElementById('postUserName').innerText;
    var clauseTitle = document.getElementById('modalTitle').innerText;
    var clauseDescription = document.getElementById('modalDescription').innerText;
    var clauseText = document.getElementById('modalText').innerText;

    //alert(username + " " + clauseTitle + " " + clauseDescription + " " + clauseText);

    $.ajax({
        url: "/classes/updateAssignment",
        type:"POST",
        dataType:"json",
        data: {
            username: username,
            title: clauseTitle,
            description: clauseDescription,
            text: clauseText
        },
        contentType: "application/json",
        cache:false,
        timeout: 5000,
        complete: function() {
          console.log("Process Complete");  
        }, 
        success: function(data) {
            console.log("Process Success");
            console.log(data);
        },
        error: function() {
            console.log("Process Error");
        },

    });
})

classes.js route

router.post('/updateAssignment', function (req, res) {
    console.log(req.body.username)
    console.log(req.body.title);
    console.log(req.body.description);
    console.log(req.body.text);
    res.contentType('json');
    res.send({
        some: JSON.stringify({
            response: 'json'
        })
    });


});