input.ts:297 TypeError: Cannot read properties of null (reading 'tiaoyue')

Creator 3.x
#1

import { _decorator, Component, Node, input, Input, EventTouch } from ‘cc’;

import { Player } from ‘./Player’;

const { ccclass, property } = _decorator;

@ccclass(‘tiaoyue’)

export class tiaoyue extends Component {

onTouchStart(event: EventTouch) {

    console.log(event.getLocation());  // Location on screen space

    console.log(event.getUILocation());  // Location on UI space

    this.node.getComponent(Player).tiaoyue();

}

}

建立的一个按钮，点击时调用player的tiaoyue（）方法，然后就会报错