Notice (1024) : Undefined property `SitemapsController::$RequestHandler` in `/home/wknum/webapps/weeknumber/src/Controller/SitemapsController.php` on line 47 [in /home/wknum/webapps/weeknumber/vendor/cakephp/cakephp/src/Controller/Controller.php, line 324]
Warning (512) : Unable to emit headers. Headers sent in file=/home/wknum/webapps/weeknumber/vendor/cakephp/cakephp/src/Error/Renderer/HtmlErrorRenderer.php line=37 [in /home/wknum/webapps/weeknumber/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php, line 65]
Warning (2) : Cannot modify header information - headers already sent by (output started at /home/wknum/webapps/weeknumber/vendor/cakephp/cakephp/src/Error/Renderer/HtmlErrorRenderer.php:37) [in /home/wknum/webapps/weeknumber/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php, line 163]
Warning (2) : Cannot modify header information - headers already sent by (output started at /home/wknum/webapps/weeknumber/vendor/cakephp/cakephp/src/Error/Renderer/HtmlErrorRenderer.php:37) [in /home/wknum/webapps/weeknumber/vendor/cakephp/cakephp/src/Http/ResponseEmitter.php, line 192]
Error: 500 Error: Call to a member function respondAs() on null | Week Number

500 Error: Call to a member function respondAs() on null | Week Number 📋

Error
Error in: ROOT/src/Controller/SitemapsController.php, line 47
APP/Controller/SitemapsController.php at line 47 (edit)
     */
    public function index()
    {
        $this->viewBuilder()->setLayout('sitemap');
        $this->RequestHandler->respondAs('xml');
        //Manual Entries
        $modified = new FrozenTime('1 day ago');

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