in static/js/tracker.js [1312:1322]
e.exports = function (e, t) {
if (!r(e)) return e;
var n, o;
if (t && 'function' == typeof (n = e.toString) && !r((o = n.call(e))))
return o;
if ('function' == typeof (n = e.valueOf) && !r((o = n.call(e))))
return o;
if (!t && 'function' == typeof (n = e.toString) && !r((o = n.call(e))))
return o;
throw TypeError("Can't convert object to primitive value");
};