微信通知的时候print报错

@@ -2447,8 +2447,7 @@ class Utils {
         ? 'http://nosqn.colorcun.com/reserve/images/3x/%E6%9A%82%E6%97%A0.png'
         : sellerImage;
     Uint8List _thumbnailUint8List;
-
-      print(size(_thumbnail.length));
+    print(size(_thumbnail.length));
     if (liteStyle != '0') {
       _thumbnailUint8List = await canvas(
           context,
@@ -2458,8 +2457,6 @@ class Utils {
           month,
           week);
     }
-
-    print(size(_thumbnailUint8List.length));
     String _title =
         "您预订的${Provider.of<UserModel>(context, listen: false).user.sellername}，已经安排，点击查看详情";