Sometimes, we want to fix Failed to execute ‘json’ on ‘Response’: body stream is locked error with JavaScript fetch.
In this article, we’ll look at how to fix Failed to execute ‘json’ on ‘Response’: body stream is locked error with JavaScript fetch.
How to fix Failed to execute ‘json’ on ‘Response’: body stream is locked error with JavaScript fetch?
To fix Failed to execute ‘json’ on ‘Response’: body stream is locked error with JavaScript fetch, we call clone on the response object before we use the response object multiple times.
For instance, we write
const res = await fetch("yourfile.json");
const data = await res.clone().json();
to call res.clone before we call json to clone the response object before we return a promise with the JSON response body.
Conclusion
To fix Failed to execute ‘json’ on ‘Response’: body stream is locked error with JavaScript fetch, we call clone on the response object before we use the response object multiple times.
