diff --git a/contact-center/app/src/main/resources/static/error.html b/contact-center/app/src/main/resources/static/error.html
index 962b43bb..fa985dcc 100644
--- a/contact-center/app/src/main/resources/static/error.html
+++ b/contact-center/app/src/main/resources/static/error.html
@@ -1,11 +1,15 @@
-<!-- Copyright (C) 2018-2024 Beijing Huaxia Chunsong Technology Co., Ltd.
-    <https://www.chatopera.com>, Licensed under the Chunsong Public 
-    License, Version 1.0  (the "License"), https://docs.cskefu.com/licenses/v1.html
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
-    limitations under the License. -->
+<!-- * Copyright (C) (2023-2024) Beijing Huaxia Chunsong Technology Co., Ltd.
+* <https://www.chatopera.com>, Licensed under the Chunsong Public
+* License, Version 1.0  (the "License"), https://docs.cskefu.com/licenses/v1.html
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+* Copyright (C) 2018- Jun. 2023 Chatopera Inc, <https://www.chatopera.com>,  Licensed under the Apache License, Version 2.0,
+* http://www.apache.org/licenses/LICENSE-2.0
+* Copyright (C) 2017 优客服-多渠道客服系统,  Licensed under the Apache License, Version 2.0,
+* http://www.apache.org/licenses/LICENSE-2.0 -->
 <!DOCTYPE html>
 <html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org">
     <head>
@@ -15,7 +19,7 @@
     <body>
         <h3>404 Not Found</h3>
         <h1 th:text="${errorCode}">404</h1>
-        <p th:utext="${errorMessage}">Error java.lang.NullPointerException</p>
+        <p th:utext="${errorMessage}">Error</p>
         <a href="/" th:href="@{/}">Back to Home Page</a>
     </body>
 </html>
\ No newline at end of file
diff --git a/contact-center/app/src/main/resources/static/testclient.html b/contact-center/app/src/main/resources/static/testclient.html
index 48b58bcf..941f80ad 100644
--- a/contact-center/app/src/main/resources/static/testclient.html
+++ b/contact-center/app/src/main/resources/static/testclient.html
@@ -1,11 +1,15 @@
-<!-- Copyright (C) 2018-2024 Beijing Huaxia Chunsong Technology Co., Ltd.
-    <https://www.chatopera.com>, Licensed under the Chunsong Public 
-    License, Version 1.0  (the "License"), https://docs.cskefu.com/licenses/v1.html
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
-    limitations under the License. -->
+<!-- * Copyright (C) (2023-2024) Beijing Huaxia Chunsong Technology Co., Ltd.
+* <https://www.chatopera.com>, Licensed under the Chunsong Public
+* License, Version 1.0  (the "License"), https://docs.cskefu.com/licenses/v1.html
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+* Copyright (C) 2018- Jun. 2023 Chatopera Inc, <https://www.chatopera.com>,  Licensed under the Apache License, Version 2.0,
+* http://www.apache.org/licenses/LICENSE-2.0
+* Copyright (C) 2017 优客服-多渠道客服系统,  Licensed under the Apache License, Version 2.0,
+* http://www.apache.org/licenses/LICENSE-2.0 -->
 <!DOCTYPE html>
 <html lang="zh">
 <!-- 本页只用于测试/演示目的 -->
