setPosition错误

Creator 2.x
#1

spawnEnemy(dt){
let parent=cc.find(“Canvas”);
let x=this.getRandom();
let y=320;
let enemy=cc.instantiate(this.enemy);
enemy.setPosition(x,y);
enemy.parent=parent;
},
代码如上所示，提示Simulator: E/jswrapper (272): ERROR: Uncaught TypeError: Cannot read property ‘setPosition’ of null, location: dst/assets/scripts/Player.js:0:0，请问怎么解决

#2

this.getRandom()代码如下：
getRandom:function(){
var Range=960;
var Rand=Math.random();
return (-480+Math.round(Rand*Range));
},

#3

请问解决了吗，我也遇到这个问题了 :joy: