'fix'

app/Modules/Book/Models/BookConfig.php

@@ -287,7 +287,7 @@ class BookConfig extends Model
         if ($order) {
             $res->orderBy($order[0], $order[1]);
         } else {
-            $str = implode(',', $bid_arr);
+            $str = implode(',', $where['bids']);
             $field = 'bid,' . $str;
             $res->orderBy(DB::raw('field(' . $field . ')'));
         }