[Emergency] Uncaught Error: Call to a member function Answer() on null

GET /good-conversations/answer/will-there-be-more-variety-of-stock-in-stores-for-420

Line 63 in /home/goodtoknownb/public_html/mysite/code/PageController.php

Source

54         $js[] = 'javascript/social.js';
55         
56         Requirements::combine_files('combined.js', $js);
57         Requirements::process_combined_files();
58 
59     }
60 
61     public function answer(HTTPRequest $request) {
62         $question = Question::get()->filter(['Slug' => $request->param('ID')])->first();
63         $answer = $question->Answer();
64         if (!$answer) {
65             return $this->httpError(404, _t('Custom.ANSWERNOTFOUND', 'That answer could not be found.'));
66         }
67 
68         return [
69             'Question' => $question,

Trace