Unable to look for methods in dstorage

[shourya12]

Hi,
I have been trying to run your code but facing a error in app.js file.
particularly in this line of code in app.js:

this.state.dstorage.methods.uploadFile(result[0].hash, result[0].size, this.state.type, this.state.name, description).send({ from: this.state.account }).on('transactionHash', (hash) => {
        this.setState({
         loading: false,
         type: null,
         name: null
       })
       window.location.reload()
      })

Please go through the attached screenshot of error