diff --git a/project/templates/chat.html b/project/templates/chat.html
index 11a7f49..28d8a89 100644
--- a/project/templates/chat.html
+++ b/project/templates/chat.html
@@ -99,7 +99,7 @@
             success: null,
             dataType: null
           }).always(function (response) {
-              if (response?.status == "success") {
+              if (response && response.status == "success") {
                 var msg_list = document.getElementById("msg-list")
                 var li = document.createElement('li');
                 var pre = document.createElement('pre');
diff --git a/project/templates/manage.html b/project/templates/manage.html
index 1c59dbd..541f339 100644
--- a/project/templates/manage.html
+++ b/project/templates/manage.html
@@ -65,11 +65,11 @@
     var account = obj.parentElement.parentElement
     var data = {
       method: "update",
-      id: account?.children[0]?.innerHTML,
-      email: account?.children[1]?.innerHTML,
-      name: account?.children[2]?.innerHTML,
-      role: account?.children[3]?.children[0].value,
-      isActivated: account?.children[4].children[0].checked
+      id: account.children[0].innerHTML,
+      email: account.children[1].innerHTML,
+      name: account.children[2].innerHTML,
+      role: account.children[3].children[0].value,
+      isActivated: account.children[4].children[0].checked
     }
     $.ajax({
       type: 'POST',
@@ -89,11 +89,11 @@
     var account = obj.parentElement.parentElement
     var data = {
       method: "delete",
-      id: account?.children[0]?.innerHTML,
-      email: account?.children[1]?.innerHTML,
-      name: account?.children[2]?.innerHTML,
-      role: account?.children[3]?.children[0].value,
-      isActivated: account?.children[4].children[0].checked
+      id: account.children[0].innerHTML,
+      email: account.children[1].innerHTML,
+      name: account.children[2].innerHTML,
+      role: account.children[3].children[0].value,
+      isActivated: account.children[4].children[0].checked
     }
     var ret = confirm("确认删除用户\"" + data.name + "\"吗？")
     if (ret == true) {