Error message: The process cannot access the file 'C:\inetpub\wwwroot\DiskCache\Skin\el__tpl_skin_HorizontalMenu.ascx' because it is being used by another process.

Url: https://vrontinos.gr/skin.aspx?lang=el&action=login&goback=/el/ProductCategory/0098BDA4.aspx~_~_~009B3289=009B38C3‡009B38BD!_!_!splitter_products_offset=24

Message: The process cannot access the file 'C:\inetpub\wwwroot\DiskCache\Skin\el__tpl_skin_HorizontalMenu.ascx' because it is being used by another process.

   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
   at Bone.DiskCache.Write(DiskCacheItem item, Object entry) in C:\Bone\Bone\src\Cache\DiskCache\DiskCache.cs:line 104
   at Bone.DiskCache.Set(DiskCacheItem item, String entry) in C:\Bone\Bone\src\Cache\DiskCache\DiskCache.cs:line 89
   at Bone.BONE.LoadControl(String virtual_path, DBItem item, Boolean cache, Boolean hide_debug_sign, Object[] objects, String default_if_file_no_exists) in C:\Bone\Bone\src\BONE.cs:line 2920
   at Bone.BONE.LoadControl(String virtual_path, DBItem item, Boolean cache, Boolean hide_debug_sign, Object[] objects) in C:\Bone\Bone\src\BONE.cs:line 2841
   at ASP.skin_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in c:\inetpub\wwwroot\skin.aspx:line 233
   at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
   at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
   at System.Web.UI.Page.Render(HtmlTextWriter writer)
   at Bone.Asp.RenderSkin(TextWriter w) in C:\Bone\Bone\src\Classes\Asp.cs:line 71
   at Bone.ModalAction.RenderPage(TextWriter w) in C:\Bone\Bone\src\Actions\Modal.cs:line 81
   at Bone.Asp.Render(HtmlTextWriter w) in C:\Bone\Bone\src\Classes\Asp.cs:line 82
   at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
   at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)