public function show($id)
 {
     $this->crash_report = CrashReport::findById($id);
     $symbolicator = new Symbolicator($this->crash_report->summary, 'tower1', $this->crash_report->appVersion);
     $this->symbolicated_report = null;
     $this->symbolicator_error_message = null;
     try {
         $this->symbolicated_report = $symbolicator->symbolicate();
     } catch (Exception $e) {
         $this->symbolicator_error_message = markdown_to_html($e->getMessage());
     }
 }