code: public function getErrorCaller()
      {
          $meta = array();
          if ($this->error) {
              // no need to store originating file/line... it's part of error message
              $meta = array(
                  'errorType' => $this->error['type'],
                  'errorCat' => $this->error['category'],
                  'errorHash' => $this->error['hash'],
                  'backtrace' => $this->error['backtrace'] ?: array(),
                  'sanitize' => $this->error['isHtml'] === false,
                  'channel' => 'phpError',
              );
          } else {
              $meta = $this->debug->utilities->getCallerInfo();
              $meta = array(
                  'file' => $meta['file'],
                  'line' => $meta['line'],
              );
          }
          return $meta;
      }
docs: Get calling line/file for error and warn
  
  @return array