ReferenceError:uncapture is not defined

[13691993188]

Challenge Passing Values to Functions with Arguments has an issue.
User Agent is: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.71 Safari/537.36.
Please describe how to reproduce this issue, and include links to screenshots if possible.

My code:

// 举例
//function ourFunction(a, b) {
//console.log(a - b);
//}
//ourFunction(10, 5); // Outputs 5
//
// Only change code below this line.

what ever you change the code ,the following err info is showed.
=======================
ReferenceError:uncapture is not defined