NullPointerException while createAndBindUI in dialogbox

[R A]

Hi All,

I have simple dialog bix and the ui is defined in the fololowing
ui.xml. This is working fine as long as I have one widget on the
HTMLPanel. It's throwing the NullPointerException at
this.setWidget(uiBinder.createAndBindUi(this)); If I add a pager
object.

Help me inresolving this issue. Thanks in advance

<!DOCTYPE ui:UiBinder SYSTEM "http://dl.google.com/gwt/DTD/xhtml.ent";>
<ui:UiBinder xmlns:ui="urn:ui:com.google.gwt.uibinder"
        xmlns:g="urn:import:com.google.gwt.user.client.ui"
xmlns:cell="urn:import:com.google.gwt.user.cellview.client"
        xmlns:dom="urn:import:com.google.gwt.dom.client">
        <ui:style>
                .cellTable {
                        border-bottom: 1px solid #ccc;
                        text-align: left;
                        margin-bottom: 4px;
                }
        </ui:style>
        <g:HTMLPanel>
                <cell:CellTable addStyleNames='{style.cellTable}'
                        ui:field="attributeTable" />
        </g:HTMLPanel>
</ui:UiBinder>

MyDialogBox.java

/**
     * UiBinder.
     */
    interface Binder extends UiBinder<Widget, MyDialogBox>
    {
    }

    // CHECKSTYLE:OFF - not GWT friendly.
    @UiField
    CellTable<DialogInfo> attributeTable;

    /**
     * The pager used to change the range of data.
     */
    SimplePager pager;


    public MyDialogBox()
    {
        super(true);
        this.setWidget(uiBinder.createAndBindUi(this));
        this.setModal(true);
        buildUI();
    }

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