udpate title

PG/error.html

@@ -6,7 +6,7 @@
         <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
         <meta name="description" content="">
         <meta name="author" content="">
-        <title>Blank Template for Bootstrap</title>
+        <title>Error Message</title>
         <!-- Bootstrap core CSS -->
         <link href="bootstrap/css/bootstrap.css" rel="stylesheet">
         <!-- Custom styles for this template -->