Storyboard With Widget

i have a problem in building in the android tab… and it is very ok in simulator… running in windows…

here’s my code…

–Main.Lua

display.setStatusBar( display.HiddenStatusBar )
local storyboard = require “storyboard”

native.showAlert(“Alert”, “I’m here”, {“Close”})

storyboard.gotoScene( “menu”, “slideLeft”, 600  )

–Menu.lua

local storyboard = require( “storyboard” )
local scene = storyboard.newScene()

function scene:createScene( event )
        
        local group = self.view
        bg = display.newImage(“background/mainBg.png”,0,0)
        group:insert(bg)
    
end
function scene:enterScene( event )
    
    local function LearningScene(event)

        local textmessage = display.newText(“hello”, 100, 100, nil, 20)    
    end
    
local widget = require “widget”
widget.setTheme( “theme_ios” )
local w = display.contentWidth / 2
local h = display.contentHeight / 2

    local group = self.view
        
        learnbutton = widget.newButton{
        style = “blue3small”,
        label = “Learn”,
                width = 90, height = 30,
        onRelease = LearningScene
    }
    learnbutton.x = w
    learnbutton.y = h
        group:insert(learnbutton)
        
        
end

function scene:exitScene( event )
    local group = self.view
        
        learnbutton:removeSelf()
        learnbutton = nil
        
end

scene:addEventListener( “createScene”, scene )
scene:addEventListener( “enterScene”, scene )
scene:addEventListener( “exitScene”, scene )

return scene