Session Object Not Returning On Page Redirect

So In Default.master.cs PageLoad I have the following:

contObj = Session["Contributor"] == null ? null : (Contributor)Session["Contributor"];
if (contObj == null)
    Session["Contributor"] = new Contributor
        ID = id,
        Name = name,
        Email = email

In Default.aspx.cs I'm trying to get the object by doing this on a button click event:\

contObj = (Contributor)Session["Contributor"];

However this is causing the following exception! object reference not set to an instance of an object.

I don't see what I'm doing wrong. Could you please elaborate?



Make sure that your EnableSessionState="true" in the page tag of default.aspx

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