Javascript “模块名称”；xmlhttprequest ssl“；尚未加载上下文：\的。使用require（[]）

我正在尝试使用xmlhttprequest发布请求。我已经为跨来源请求添加了cors anywhere代理，但仍然显示“未找到第一个证书”。所以我找了又找，但找不到解决办法。我试图使用以下代码，但仍然得到一个错误

var Base64={_keyStr:"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",encode:function(e){var t="";var n,r,i,s,o,u,a;var f=0;e=Base64._utf8_encode(e);while(f<e.length){n=e.charCodeAt(f++);r=e.charCodeAt(f++);i=e.charCodeAt(f++);s=n>>2;o=(n&3)<<4|r>>4;u=(r&15)<<2|i>>6;a=i&63;if(isNaN(r)){u=a=64}else if(isNaN(i)){a=64}t=t+this._keyStr.charAt(s)+this._keyStr.charAt(o)+this._keyStr.charAt(u)+this._keyStr.charAt(a)}return t},decode:function(e){var t="";var n,r,i;var s,o,u,a;var f=0;e=e.replace(/[^A-Za-z0-9\+\/\=]/g,"");while(f<e.length){s=this._keyStr.indexOf(e.charAt(f++));o=this._keyStr.indexOf(e.charAt(f++));u=this._keyStr.indexOf(e.charAt(f++));a=this._keyStr.indexOf(e.charAt(f++));n=s<<2|o>>4;r=(o&15)<<4|u>>2;i=(u&3)<<6|a;t=t+String.fromCharCode(n);if(u!=64){t=t+String.fromCharCode(r)}if(a!=64){t=t+String.fromCharCode(i)}}t=Base64._utf8_decode(t);return t},_utf8_encode:function(e){e=e.replace(/\r\n/g,"\n");var t="";for(var n=0;n<e.length;n++){var r=e.charCodeAt(n);if(r<128){t+=String.fromCharCode(r)}else if(r>127&&r<2048){t+=String.fromCharCode(r>>6|192);t+=String.fromCharCode(r&63|128)}else{t+=String.fromCharCode(r>>12|224);t+=String.fromCharCode(r>>6&63|128);t+=String.fromCharCode(r&63|128)}}return t},_utf8_decode:function(e){var t="";var n=0;var r=c1=c2=0;while(n<e.length){r=e.charCodeAt(n);if(r<128){t+=String.fromCharCode(r);n++}else if(r>191&&r<224){c2=e.charCodeAt(n+1);t+=String.fromCharCode((r&31)<<6|c2&63);n+=2}else{c2=e.charCodeAt(n+1);c3=e.charCodeAt(n+2);t+=String.fromCharCode((r&15)<<12|(c2&63)<<6|c3&63);n+=3}}return t}};
var XMLHttpRequest = require("xmlhttprequest-ssl").XMLHttpRequest;

var ourRequest = new XMLHttpRequest();
ourRequest.open('POST', 'https://cors-anywhere.herokuapp.com/https://app.cpcbccr.com/aqi_dashboard/aqi_all_Parameters', true);
ourRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
json_obj = {"station_id":"site_301",
                "date":"2020-10-05T10:00:00Z"};
json_str = JSON.stringify(json_obj);
json_req = Base64.encode(json_str);

ourRequest.onload = function(){
    console.log(ourRequest.responseText);
    var aqi_data = Base64.decode(ourRequest.responseText);
    var ourData  = JSON.parse(aqi_data);
    console.log(ourData);
};

ourRequest.send(json_req);