diff --git a/skywalking-webui/src/main/java/com/ai/cloud/controller/AlarmRuleCtl.java b/skywalking-webui/src/main/java/com/ai/cloud/controller/AlarmRuleCtl.java
index c920c2b40..0e15deef7 100644
--- a/skywalking-webui/src/main/java/com/ai/cloud/controller/AlarmRuleCtl.java
+++ b/skywalking-webui/src/main/java/com/ai/cloud/controller/AlarmRuleCtl.java
@@ -231,7 +231,9 @@ public class AlarmRuleCtl {
         ConfigArgs configArgs = new ConfigArgs();
         configArgs.setPeriod(json.getInteger("period"));
         MailInfo mailInfo = new MailInfo();
-        mailInfo.setMailCc(json.getString("mailCc").toString().trim().split(","));
+        if(json.containsKey("mailCc") && !StringUtil.isBlank(json.getString("mailCc"))){
+        	mailInfo.setMailCc(json.getString("mailCc").toString().trim().split(","));
+        }
         mailInfo.setMailTo(json.getString("mailTo").toString().trim().split(","));
         configArgs.setMailInfo(mailInfo);
         ruleMVO.setConfigArgs(configArgs);
@@ -322,7 +324,9 @@ public class AlarmRuleCtl {
         ConfigArgs configArgs = new ConfigArgs();
         configArgs.setPeriod(json.getInteger("period"));
         MailInfo mailInfo = new MailInfo();
-        mailInfo.setMailCc(json.getString("mailCc").toString().trim().split(","));
+        if(json.containsKey("mailCc") && !StringUtil.isBlank(json.getString("mailCc"))){
+        	mailInfo.setMailCc(json.getString("mailCc").toString().trim().split(","));
+        }
         mailInfo.setMailTo(json.getString("mailTo").toString().trim().split(","));
         configArgs.setMailInfo(mailInfo);
         ruleMVO.setConfigArgs(configArgs);
diff --git a/skywalking-webui/src/main/java/com/ai/cloud/controller/AppMaintainCtl.java b/skywalking-webui/src/main/java/com/ai/cloud/controller/AppMaintainCtl.java
index 3554bdce9..2a4a1b8f4 100644
--- a/skywalking-webui/src/main/java/com/ai/cloud/controller/AppMaintainCtl.java
+++ b/skywalking-webui/src/main/java/com/ai/cloud/controller/AppMaintainCtl.java
@@ -2,13 +2,11 @@ package com.ai.cloud.controller;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.servlet.ModelAndView;
 
 @Controller
-@RequestMapping("/app")
 public class AppMaintainCtl {
-    @RequestMapping("/create")
+    @RequestMapping("/app/create")
     public String create() {
-        return "app/createApp";
+        return "app/newApp";
     }
 }
diff --git a/skywalking-webui/src/main/webapp/ftl/app/createApp.ftl b/skywalking-webui/src/main/webapp/ftl/app/newApp.ftl
similarity index 100%
rename from skywalking-webui/src/main/webapp/ftl/app/createApp.ftl
rename to skywalking-webui/src/main/webapp/ftl/app/newApp.ftl