I'm receiving the following error in VB.Net.

"Object reference not set to an instance of an object"

```
Try

    Dim myurl As String
    myurl = "http://example.com/page.php?user=" & uzjer
    WebBrowser1.Url = New Uri(myurl)

    For Each ele As HtmlElement In WebBrowser1.Document.Links
        Dim username As String
        username = ele.GetAttribute("name")

        MsgBox(username)

    Next
Catch ex As Exception
    MsgBox(ex.Message)
End Try

```