[Emergency] Uncaught Error: Class 'HTTPResponse_Exception' not found

GET /products-and-services/surgical-instruments/never-outs

Line 32 in /var/www/vhosts/boltons.co.uk/httpdocs/app/src/Pages/InstrumentGroupPageController.php

Source

23     ];
24 
25     private function setCategory($data)
26     {
27         if (array_key_exists('CategorySlug', $data)) {
28             $this->category = $this->Categories()->filter([
29                 'Slug' => $data['CategorySlug']
30             ])->first();
31             if (is_null($this->category)) {
32                 throw new HTTPResponse_Exception(ErrorPage::response_for(404), 404);
33             }
34         }
35     }
36 
37     private function setType($data)
38     {

Trace