Case Study Site Creation "Request uses too many resources."

PostClassCaseStudy.js

var outerObject = outerObject || {};

SP.SOD.executeFunc("sp.js");

//These functions taken from the internet
function getUrlVars() {
    var vars = [], hash;
    var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
    for (var i = 0; i < hashes.length; i++) {
        hash = hashes[i].split('=');
        vars.push(hash[0]);
        vars[hash[0]] = hash[1];
    }
    return vars;
};

function getUrlVar(name) {
    return getUrlVars()[name];
};

var hostWebUrl = decodeURIComponent(getUrlVar('SPHostUrl'));
var appWebUrl = decodeURIComponent(getUrlVar('SPAppWebUrl'));

jQuery.getScript(
    hostWebUrl + "/_layouts/15/SP.RequestExecutor.js",
    continueExecution
);

function continueExecution() {

    //Begin Create Site Portion
    outerObject.CreateSite = outerObject.CreateSite ||
    function CreateSite(event) {
       
        SP.SOD.executeFunc("sp.js");
              
        // Get App and Host context (don't be confused that the object name has the word 'app' in it)
        var appContext = SP.ClientContext.get_current();       
        var hostContext = new SP.AppContextSite(appContext, hostWebUrl);

        // Create variables, object, and properties for sub-site
        //debugger;
        var userSiteName = $("#userInputSiteName").val();
        var userSiteCode = $("#userInputSiteCode").val();
        var newSiteDetails = new SP.WebCreationInformation();
        newSiteDetails.set_title(userSiteName);
        newSiteDetails.set_url(userSiteCode);		  	
        newSiteDetails.set_language(1033);
        newSiteDetails.set_webTemplate("CASESTUDYMONMORN#0");

        // Create the Site URL		
        var siteUrl = String.format(hostWebUrl + "/" + userSiteCode);

        // Get the web site and site Collection from host site and add sub-site
        var website = hostContext.get_web();
        var webCollection = website.get_webs();
        webCollection.add(newSiteDetails);

        // execute query
        $("#messageToUser").text("Working on it...");
        $("#messageToUserArea").css("color", "black");
        $("#messageToUserArea").css("display", "block");
        appContext.set_requestTimeout(10*60*100000);
        appContext.executeQueryAsync(successSubsiteCreation, failSubsiteCreation);

        function successSubsiteCreation(sender, args) {
            
            $("#messageToUser").html("Success creating project site '" + userSiteName + "' at <a href='" + siteUrl + "'>" + siteUrl + "</a>.");
            $("#messageToUserArea").css("color","green");
            $("#messageToUserArea").css("display", "block");
        }

        function failSubsiteCreation(sender, args) {
            
            $("#messageToUser").text("Error occurred while attempting to create site " + userSiteName + " at URL " + siteUrl + ". \n" + args.get_message() + "\n" + args.get_stackTrace() + "\n" + args.get_errorDetails());
            $("#messageToUserArea").css("color", "red");
            $("#messageToUserArea").css("display", "block");
        }
        
    }

}