diff --git a/web/src/StoreListPage.js b/web/src/StoreListPage.js
index 0ec3a75..d3a4f46 100644
--- a/web/src/StoreListPage.js
+++ b/web/src/StoreListPage.js
@@ -142,6 +142,10 @@ class StoreListPage extends React.Component {
         width: "250px",
         sorter: (a, b) => a.storageProvider.localeCompare(b.storageProvider),
         render: (text, record, index) => {
+          if (text === "") {
+            return null;
+          }
+
           return (
             <a target="_blank" rel="noreferrer" href={Setting.getMyProfileUrl(this.state.account).replace("/account", `/providers/admin/${text}`)}>
               {text}
diff --git a/web/src/backend/FetchFilter.js b/web/src/backend/FetchFilter.js
index 20f62e8..4d3acef 100644
--- a/web/src/backend/FetchFilter.js
+++ b/web/src/backend/FetchFilter.js
@@ -31,7 +31,7 @@ const demoModeCallback = (res) => {
         okText: i18next.t("general:OK"),
         cancelText: i18next.t("general:Cancel"),
         onOk() {
-          Setting.openLink(`https://demo.ai.casbin.com/${location.pathname}${location.search}?username=built-in/admin&password=123`);
+          Setting.openLink(`https://demo-ai.casbin.com/${location.pathname}${location.search}?username=built-in/admin&password=123`);
         },
         onCancel() {},
       });