diff --git a/src/views/accounts/WAIQRCode.jsx b/src/views/accounts/WAIQRCode.jsx
index 685353b..5a7273b 100644
--- a/src/views/accounts/WAIQRCode.jsx
+++ b/src/views/accounts/WAIQRCode.jsx
@@ -31,6 +31,11 @@ const WAIQRCode = ({ ...props }) => {
       .catch((ex) => {
         setQRStatus('expired')
         console.error(ex)
+        notification.warning({
+          placement: 'top',
+          message: ex.message,
+          // description: ex.message,
+        })
       })
   }, [])
 
diff --git a/wai-server/api/channels/channel.controller.js b/wai-server/api/channels/channel.controller.js
index 8d7aa79..a174535 100644
--- a/wai-server/api/channels/channel.controller.js
+++ b/wai-server/api/channels/channel.controller.js
@@ -7,12 +7,13 @@ const { objectMapper, isEmpty } = require('../../utils/commons.util');
 const { domain, name: domainName } = require('../../config').server;
 
 exports.newConnect = async ctx => {
+  const { phone } = ctx.query;
+  const existsSession = sessionStore.getSession(phone);
+  if (!isEmpty(existsSession)) {
+    ctx.assert(null, 400, `WhatsApp ${phone} 已连接`);
+    // return { phone, session_id: phone, ...existsSession, stauts: 'open', wai_server: domain };
+  }
   try {
-    const { phone } = ctx.query;
-    const existsSession = sessionStore.getSession(phone);
-    if (!isEmpty(existsSession)) {
-      return { phone, session_id: phone, ...existsSession, stauts: 'open', wai_server: domain };
-    }
     const whatsApp1 = await createWhatsApp(phone);
     ctx.assert(whatsApp1, 503, 'No available connections');
     whatsApp1.start();