fix

app/Modules/Book/Services/BookConfigService.php

@@ -521,7 +521,6 @@ class BookConfigService
      */
     public static function judgeBookIsFree(int $bid)
     {
-        $config = self::findFreeBookConfig(1);
         $ids = [];
         foreach ([1, 2] as $sex) {
             $config = self::findFreeBookConfig($sex);