老师。我的图片为什么没加载。背景也是。

var game =new Phaser.Game(375,667,Phaser.AUTO);

var helloState={
preload:function (){
    game.stage.backgroundColor="#a8d4bf"
    game.load.image("logo","/source/logo.png")
    },

create:function (){
    var text=game.add.text(game.world.centerX,25,"hello world11",{fill:'#fff'})
    text.anchor.set(0.5);
    var logo=game.add.image(game.world.centerX,game.world.centerY,"logo")
    logo.anchor.set(0.5);
    }
}

game.state.add("helloState",helloState);
game.state.start("helloState");