JAVA NE MARCHE PAS

Bonjour,

Lorsque je veux ouvrir une page d' un site immobilier voilà ce que l'on me dit Server Error in '/' Application.
Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

Line 19: <table width="100%" cellpadding="0" cellspacing="0">
Line 20: <tr>
Line 21: <td style="color:#050A4B;font-size:11px;"><asp:Label id="lblAdresse" runat="server" Text='<%# this.AgenceP.Adresse+"<br/>"+this.AgenceP.CodePostal + " " + this.AgenceP.Ville + "<br/>" %>' Visible="false"/></td>
Line 22: <td><div class="titre_tel_layer"><asp:Label id="lblTel" runat="server" Text='<%# "Tel : "+this.AgenceP.Telephone%>' Visible="false"/><asp:Label id="lblFax" runat="server" Text='<%# "<br />Fax : "+this.AgenceP.Fax%>' Visible="false"/></div></td>
Line 23: </tr>

Source File: d:\InetPub\AVAL\Components\EncartAgenceNew.ascx Line: 21

Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.]
ASP.components_encartagencenew_ascx.__DataBindinglblAdresse(Object sender, EventArgs e) in d:\InetPub\AVAL\Components\EncartAgenceNew.ascx:21
System.Web.UI.Control.OnDataBinding(EventArgs e) +99
System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +206
System.Web.UI.Control.DataBind() +12
System.Web.UI.Control.DataBindChildren() +216
System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +216
System.Web.UI.Control.DataBind() +12
System.Web.UI.Control.DataBindChildren() +216
System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +216
System.Web.UI.Control.DataBind() +12
Components_NouvelEncartAgence.Page_Load(Object sender, EventArgs e) in d:\InetPub\AVAL\Components\NouvelEncartAgence.ascx.cs:27
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +15
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +34
System.Web.UI.Control.OnLoad(EventArgs e) +99
System.Web.UI.Control.LoadRecursive() +47
System.Web.UI.Control.LoadRecursive() +131
System.Web.UI.Control.LoadRecursive() +131
System.Web.UI.Control.LoadRecursive() +131
System.Web.UI.Control.LoadRecursive() +131
System.Web.UI.Control.LoadRecursive() +131
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1061

Version Information: Microsoft .NET Framework Version:2.0.50727.832; ASP.NET Version:2.0.50727.832

que faut-il faire?

merci pour vos réponse s