diff --git a/engineering/engineering-wechat-mini-program-developer.md b/engineering/engineering-wechat-mini-program-developer.md
index e4e80463..0d21265a 100644
--- a/engineering/engineering-wechat-mini-program-developer.md
+++ b/engineering/engineering-wechat-mini-program-developer.md
@@ -106,7 +106,12 @@ const request = (options) => {
         if (res.statusCode >= 200 && res.statusCode < 300) {
           resolve(res.data);
         } else {
-          reject({ code: res.statusCode, message: res.data.message || 'Request failed' });
+          // Error bodies may be empty, plain text, or a gateway HTML page.
+          // Do not throw inside the success callback and leave the Promise pending.
+          const message = res.data && typeof res.data === 'object' &&
+            typeof res.data.message === 'string' && res.data.message
+            ? res.data.message : 'Request failed';
+          reject({ code: res.statusCode, message });
         }
       },
       fail: (err) => {