子域好像没有assets这个目录？
let urlString = “Textures/achieve_”+spriteName+".png";
let url = cc.url.raw(urlString);
let frame =new cc.SpriteFrame(url,cc.rect(0,0,64,64));
在主域可以正常加载到图片，在子域就不行，提示“Sorry can not load ‘%s’ because it is not placed in the ‘resources’ folder.”
应该怎么写？