[Mono-list] ASP.NET Error

[Ulaþ VURAL]

Hello, 

I install mono-0.19 and mcs-0.19 source packages and modmono-0.3 on 
RedHat7.3. i am using apache-2.0.44 

Now i can only see the index.aspx page without any error  the others gives 
the error like this 


Error
System.Web.HttpException:  ---> System.NullReferenceException: A null value 
was found where an object instance was required
in (unmanaged) 06 Apache.Web.Request:GetQueryStringInternal (intptr)
in <0x00004> 06 Apache.Web.Request:GetQueryStringInternal (intptr)
in <0x00022> 00 Apache.Web.ApacheWorkerRequest:GetQueryString ()
in <0x0002b> 00 Mono.ASPNET.MonoWorkerRequest:GetQueryStringRawBytes ()
in <0x0003c> 00 System.Web.HttpRequest:get_QueryStringRaw ()
in <0x00106> 00 System.Web.UI.HtmlControls.HtmlForm:get_Action ()
in <0x000be> 00 System.Web.UI.HtmlControls.HtmlForm:RenderAttributes 
(System.Web.UI.HtmlTextWriter)
in <0x0003f> 00 System.Web.UI.HtmlControls.HtmlControl:RenderBeginTag 
(System.Web.UI.HtmlTextWriter)
in <0x00017> 00 System.Web.UI.HtmlControls.HtmlContainerControl:Render 
(System.Web.UI.HtmlTextWriter)
in <0x0003f> 00 System.Web.UI.HtmlControls.HtmlForm:Render 
(System.Web.UI.HtmlTextWriter)
in <0x00026> 00 System.Web.UI.Control:RenderControl 
(System.Web.UI.HtmlTextWriter)
in <0x000fd> 00 System.Web.UI.Control:RenderChildren 
(System.Web.UI.HtmlTextWriter)
in <0x00017> 00 System.Web.UI.Control:Render (System.Web.UI.HtmlTextWriter)
in <0x00026> 00 System.Web.UI.Control:RenderControl 
(System.Web.UI.HtmlTextWriter)
in <0x001c6> 00 System.Web.UI.Page:ProcessRequest (System.Web.HttpContext)
in <0x001b6> 00 .ExecuteHandlerState:Execute ()
in <0x0005e> 00 .StateMachine:ExecuteState (IStateHandler,bool&)
 --- End of inner exception stack trace --- 

what can cause this 

Thanks:)