Respond as XML not working since cakePHP 3.1

Question

I need to render an XML+XSL template in my application, and it used to work with cakePHP 3.0. I have made the switch to 3.1 recently and it has stopped working. The problem

Answer 1

Try add: $this->response->header(['Content-type' => 'application/xml']);

I had the same error but my output was pdf

working 3.0.14 using this code:

$this->RequestHandler->respondAs("pdf");
$this->layout = 'pdf/default';
$this->view = 'pdf/report1_pdf';

for 3.1.x (this works if u save the file and open later, if you try to open it directly on browser its print the plain file content as a txt/html):

$this->viewBuilder()->layout('pdf/default');
$this->viewBuilder()->template('pdf/report1_pdf');
$this->RequestHandler->respondAs('pdf');
$this->response->header(['Content-type' => 'application/pdf']);