Memo is null

`$record->get('MEMO_COL')`

Call to a member function get() on null

  at vendor/hisamu/php-xbase/src/Record/AbstractRecord.php:135
    131▕         if (!$pointer = $this->data[$columnName]) {
    132▕             return null;
    133▕         }
    134▕ 
  ➜ 135▕         return $this->table->memo->get($pointer);
    136▕     }
    137▕ 
    138▕     //</editor-fold>
    139▕ 