diff --git a/webapp/controller/MarketController.class.php b/webapp/controller/MarketController.class.php
index 8e312982..504113b6 100644
--- a/webapp/controller/MarketController.class.php
+++ b/webapp/controller/MarketController.class.php
@@ -156,16 +156,16 @@ class MarketController extends BaseController {
 
         $currBatchMeta = mt\MarketBatch::getCurrentBatch();
         if (!$currBatchMeta) {
-            myself()->_rspErr(500, 'server internal error');
+            myself()->_rspErr(500, 'server internal error1');
             return;
         }
         if ($batchIdx != $currBatchMeta['id']) {
-            myself()->_rspErr(500, 'server internal error');
+            myself()->_rspErr(500, 'server internal error2');
             return;
         }
         $goodsMeta = mt\MarketGoods::getOnSaleGoods($currBatchMeta['batch_id'], $idx, $itemId);
         if (!$goodsMeta) {
-            myself()->_rspErr(500, 'server internal error');
+            myself()->_rspErr(500, 'server internal error3');
             return;
         }
         if ($currBatchMeta['white_list'] && !mt\WhiteList::inWhiteList($buyerAddress)) {
diff --git a/webapp/mt/MarketGoods.php b/webapp/mt/MarketGoods.php
index 0283fc5a..6f43d0a7 100644
--- a/webapp/mt/MarketGoods.php
+++ b/webapp/mt/MarketGoods.php
@@ -33,11 +33,11 @@ class MarketGoods {
         if (!empty($metas)) {
             foreach ($metas as $meta) {
                 if ($meta['id'] == $idx && $meta['item_id'] == $itemId) {
-                    return true;
+                    return $meta;
                 }
             }
         }
-        return false;
+        return null;
     }
 
     protected static function getMetaList()