[Vuejs]-Error to Apply Canvas in to my Vue.js Project

I solve this error.
remove import statement from ‘html2canvas’ & change my function as bellow

 screenshot(){
      const html2canvas = require('html2canvas');
      console.log('Function Screenshot');
      html2canvas(document.getElementById('photo')).then(function(canvas){
        document.body.appendChild(canvas)
     });
 }