From d4acd75955c021a29bde70591044e897165328fc Mon Sep 17 00:00:00 2001
From: "WQY\\qiong" <qiongyu.wang@outlook.com>
Date: Fri, 18 Nov 2022 21:12:44 +0800
Subject: [PATCH] Add error log

---
 api/command.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/api/command.py b/api/command.py
index 71bcd4a..e48a732 100644
--- a/api/command.py
+++ b/api/command.py
@@ -515,6 +515,7 @@ def execute_batch_command(name: str, cs: ChangeSet) -> ChangeSet:
                 r = cache_delete_command(name, ChangeSet(op))
 
             if r == None:
+                print(f'ERROR: Build [{op}] returns None')
                 return ChangeSet()
 
             if op['type'] == 'demand':