---
title: "Avoid the conversion on error when loading the document"
description: "Learn how to avoid the conversion on error when loading the document using Node and the Unfetch library and relies on the PDFShift's API."
language: 'Node'
library: 'Unfetch'
property: raise_for_status
output: 'pdf'
related: ['convert-html-to-pdf-from-raw-html']
default: false
---

In this guide, we'll show you how to abort the conversion when loading the distant source does not return a 2XX response.

When you're converting a document, you might want to avoid the conversion on error when loading the document. This can be done by setting the `raise_for_status` parameter to `True` in the request.


```javascript
const fetch = require('unfetch')
const fs = require('fs');

// You can get an API key at https://pdfshift.io
api_key = 'sk_xxxxxxxxxxxx'

params = {
    source: 'https://www.httpstat.us/404',
    raise_for_status: True
}

const response = await fetch('https://api.pdfshift.io/v3/convert/pdf', {
    method: 'POST',
    headers: {
        'Content-Type': 'application/json',
        'X-API-Key': api_key
    },
    body: JSON.stringify(params)
})

// Handle errors:
if (!response.ok) {
    throw new Error(`Request failed with status code ${response.status}: ${response.data}`);
}

fs.writeFileSync('result.pdf', await response.blob());

console.log('The PDF document was generated and saved to result.pdf');
```

Passing `raise_for_status` to `true` will ensure that if PDFShift can not load your document, the conversion will fail with an error.