[support] Drupal 7 Panel layout issue

[Austin Einter]

Hi All
I am using Drupal 7. I created panel page, now while I am trying to add
more columns in panel layout, I am finding some exceptions as below.
Can somebody let me know, how to get out of this error.

An AJAX HTTP error occurred.
HTTP Result Code: 403
Debugging information follows.
Path: /netcloudsystems.com/?q=panels/ajax/editor/layout/new/settings/canvas
StatusText: Forbidden
ResponseText:
Access denied | Net Cloud Systems
@import url("
http://localhost/netcloudsystems.com/modules/system/system.base.css?m6sl75
");
@import url("
http://localhost/netcloudsystems.com/modules/system/system.menus.css?m6sl75
");
@import url("
http://localhost/netcloudsystems.com/modules/system/system.messages.css?m6sl75
");
@import url("
http://localhost/netcloudsystems.com/modules/system/system.theme.css?m6sl75
");
@import url("
http://localhost/netcloudsystems.com/misc/ui/jquery.ui.core.css?m6sl75");
@import url("
http://localhost/netcloudsystems.com/misc/ui/jquery.ui.theme.css?m6sl75");
@import url("
http://localhost/netcloudsystems.com/modules/overlay/overlay-parent.css?m6sl75
");
@import url("
http://localhost/netcloudsystems.com/modules/comment/comment.css?m6sl75");
@import url("
http://localhost/netcloudsystems.com/modules/field/theme/field.css?m6sl75");
@import url("
http://localhost/netcloudsystems.com/modules/node/node.css?m6sl75");
@import url("
http://localhost/netcloudsystems.com/modules/search/search.css?m6sl75");
@import url("
http://localhost/netcloudsystems.com/modules/user/user.css?m6sl75");
@import url("
http://localhost/netcloudsystems.com/sites/all/modules/views/css/views.css?m6sl75
");
@import url("
http://localhost/netcloudsystems.com/sites/all/modules/ctools/css/ctools.css?m6sl75
");
@import url("
http://localhost/netcloudsystems.com/sites/all/modules/panels/css/panels.css?m6sl75
");
@import url("
http://localhost/netcloudsystems.com/sites/all/modules/ddblock/css/ddblock.css?m6sl75
");
@import url("
http://localhost/netcloudsystems.com/modules/shortcut/shortcut.css?m6sl75");
@import url("
http://localhost/netcloudsystems.com/modules/toolbar/toolbar.css?m6sl75");
@import url("
http://localhost/netcloudsystems.com/themes/bartik/css/layout.css?m6sl75");
@import url("
http://localhost/netcloudsystems.com/themes/bartik/css/style.css?m6sl75");
@import url("
http://localhost/netcloudsystems.com/sites/default/files/color/bartik-3cf23e11/colors.css?m6sl75
");
@import url("
http://localhost/netcloudsystems.com/themes/bartik/css/print.css?m6sl75");
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Thanks
Austin
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