ComboBox error in target board.

[eswar]

I created a customise combo box in qml. The combo box is in run in qt console without any error. If i port in target niotrogen board, it will not run. If I press dropdown icon , it shows error "EGLFS: OpenGL windows cannot be mixed with others.Aborted". The process is aborted. How can i overcome this error.
My code:

import QtQuick 2.5
import QtQuick.Controls.Styles 1.4
import QtQuick.Controls 1.4

Item {

id: item_combobox

property int cbwidth:250
property int cbheight:50
property int cbradius:5
property int cbborderwidth:1
property string cbbordercolor:"#CBCBCB"
property string cbcolor:"white"
property string cbtext
property string cbtextcolor:"#197395"
property int cbpixelsize:20
property bool cbfontitalic
property bool cbfontbold:true
property string fontfamily:"Helvetica - Neue LT Pro - 75 Bold"
property url cbsource:"Image/down.png"
property int cbcurrentindex:0
property var cbmodel

signal currentindexchanged(string combo_text)

width: cbwidth
height: cbheight

ComboBox{
    id:cb

    width: cbwidth
    height: cbheight
    model: cbmodel
    currentIndex: cbcurrentindex
    editable: true




    onCurrentTextChanged: {
        currentindexchanged(cb.currentText)

    }

    style:ComboBoxStyle{

        dropDownButtonWidth : 40
        textColor:cbtextcolor

        renderType:2
        background: Rectangle {
            id: style_background
            radius: cbradius
            border.width: cbborderwidth
            border.color: cbbordercolor
            color: cbcolor
        }

        label:Label{
            text:cb.currentText
            color : cbtextcolor
            font.pixelSize: cbpixelsize
            verticalAlignment: Text.AlignVCenter
            font.bold:cbfontbold
        }
    }

    Image{

        height: 50
        width: 40
        anchors.right:parent.right
        source: cbsource
    }
}

}