ionic 4.10.3定位精度获取错误对象（…）不是函数

Question

我尝试遵循文档插件位置精度ionic位置精度，并在新的全新安装程序中复制粘贴代码

ionic 4.10.3
cordova 8.1.2

安装插件：

ionic cordova plugin add cordova-plugin-request-location-accuracy
npm install @ionic-native/location-accuracy

import in app.module.ts and top component

import { LocationAccuracy } from '@ionic-native/location-accuracy/ngx';

constructor(private locationAccuracy: LocationAccuracy) { }

button click method

    this.locationAccuracy.canRequest().then((canRequest: boolean) => {

     if(canRequest) {    this.locationAccuracy.request(this.locationAccuracy.REQUEST_PRIORITY_HIGH_ACCURACY).then(
      () => console.log('Request successful'),
      error => console.log('Error requesting location permissions', error)
      );
      }

    });

但出现错误：

  

TypeError：Object（...）不是函数   LocationAccuracy.canRequest   http://localhost:8100/build/vendor.js:79864:133