diff --git a/filemanager/templates/filemanager/index.html b/filemanager/templates/filemanager/index.html
index f6dad04ea..05fc2bcea 100644
--- a/filemanager/templates/filemanager/index.html
+++ b/filemanager/templates/filemanager/index.html
@@ -18,7 +18,7 @@
 
     <!-- Angular JS -->
 
-    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.6/angular.min.js"></script>
+    <script src="https://cdn.jsdelivr.net/npm/angular@1.6.6/angular.min.js"></script>
     <script src="{% static 'filemanager/js/fileManager.js' %}"></script>
 
     <!-- Fix for old browsers -->
@@ -645,4 +645,4 @@
 </div>
 
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/install-cn.sh b/install-cn.sh
index e60a799f5..80f7c99c2 100644
--- a/install-cn.sh
+++ b/install-cn.sh
@@ -4,6 +4,14 @@ rm -f /etc/yum.repos.d/epel.repo
 rm -f /etc/yum.repos.d/epel.repo.rpmsave
 yum install epel-release -y
 #some provider's centos7 template come with incorrect or misconfigured epel.repo
+if systemctl is-active named | grep -q 'active'; then
+  systemctl stop named
+  systemctl disable named
+  echo "Disabling named to aviod powerdns conflicts..."
+  else
+  echo "named is not installed or active, to next step..."
+fi
+# above if will check if server has named.service running that occupies port 53 which makes powerdns failed to start
 yum clean all
 yum update -y
 yum install wget which curl -y
diff --git a/install.sh b/install.sh
index 94828320d..b923418cb 100644
--- a/install.sh
+++ b/install.sh
@@ -4,6 +4,14 @@ rm -f /etc/yum.repos.d/epel.repo
 rm -f /etc/yum.repos.d/epel.repo.rpmsave
 yum install epel-release -y
 #some provider's centos7 template come with incorrect or misconfigured epel.repo
+if systemctl is-active named | grep -q 'active'; then
+  systemctl stop named
+  systemctl disable named
+  echo "Disabling named to aviod powerdns conflicts..."
+  else
+  echo "named is not installed or active, to next step..."
+fi
+# above if will check if server has named.service running that occupies port 53 which makes powerdns failed to start
 yum clean all
 yum update -y
 yum install wget which curl -y