Uncaught TypeError: undefined is not a function

[Ezcha]

I am trying to make a mining plugin for my bot. However, when I send it the mine command, it freezes and gets the error "Uncaught TypeError: undefined is not a function" on line 222 in index.js

Here is my code:

var mineflayer = require('mineflayer');
var scaffoldPlugin = require('mineflayer-scaffold')(mineflayer);
var blockFinderPlugin = require('mineflayer-blockfinder')(mineflayer);
var vec3 = mineflayer.vec3;
module.exports.inject = inject;

function inject(bot) {

var doMine = false;
var findIds = [16, 15, 14, 21, 56, 73, 74, 129];

////Functions
function findPath() {
    bot.findBlock({
        point: bot.entity.position,
        matching: findIds,
        maxDistance: 64,
        count: 1,
    }, function(err, blockPoints) {
        if (err) {
            fakeConsole("Error looking for blocks.", "error")
        }
        if (blockPoints.length) {
            bot.scaffold.to(blockPoints[0], function(err) {
                if (err) {
                    doMine = false
                    fakeConsole("Didn't get to the ore.", "error");
                } else {
                    if (doMine === true) {
                        findPath();
                    } else {
                        fakeConsole("Ended mining task.", "info");
                    }
                }
            });
        } else {
            doMine = false
            fakeConsole("No ores in range.", "info");
        }
    });
}

////Commands
bot.on('whisper', function(username, message) {
    if (message == "mine start") {
        if (doMine === false) {
            doMine = true;
            fakeConsole("Started mining.", "info");
            findPath();
        } else {
            fakeConsole("I am already mining!", "error");
        }
    }
    if (message == "mine stop") {
        if (doMine === true) {
            doMine = false;
            fakeConsole("Ending mining task...", "info");
        } else {
            fakeConsole("I am not mining.", "error");
        }
    }
});

//Fake console
function fakeConsole(text,type) {
    document = doc = window.document 
    var text = arguments[0];
    var type = arguments[1];
    var para = document.createElement("P");
    var t = document.createTextNode(text);
    para.className = type;
    para.appendChild(t);
    document.getElementById('Space').appendChild(para);
    window.scrollTo(0,document.body.scrollHeight);
    }
fakeConsole("Started mine plugin.", "info")

}