# Uppy AWS Multipart - Error: Non 2xx at XMLHttpRequest

**URL:** <https://community.transloadit.com/t/uppy-aws-multipart-error-non-2xx-at-xmlhttprequest/16206>\
**Category:** Uppy\
**Created:** [August 11, 2022, 3:27pm UTC](https://community.transloadit.com/t/uppy-aws-multipart-error-non-2xx-at-xmlhttprequest/16206 "2022-08-11T15:27:43Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![lekhacminhphuong](https://yyz2.discourse-cdn.com/flex032/user_avatar/community.transloadit.com/lekhacminhphuong/32/624_2.png) [@lekhacminhphuong](https://community.transloadit.com/u/lekhacminhphuong)\
**Post date:** [August 11, 2022, 3:27pm UTC](https://community.transloadit.com/t/uppy-aws-multipart-error-non-2xx-at-xmlhttprequest/16206/1 "2022-08-11T15:27:43Z")

</div>

I am currently using Uppy AWS Multipart plugin to upload large file (10MB) from local to AWS S3 bucket.  
I am not using companion URL and my code logic is:

1. Uppy sends a request to create/initiate the multipart upload.
2. Using the data returned from the previous request, Uppy will send a request to generate AWS S3 pre-signed URLs to use for uploading the parts.
3. Uppy will then upload the parts using the pre-signed URLs from the previous request.
4. Finally, Uppy will send a post request to complete the multipart upload.

I passes stage 1 and 2. I had an upload ID for a multipart upload and pre-signed URLs for each part.  
I got “Non 2xx” failed upload error in stage 3 when Uppy tries to upload parts into bucket.  
In “Network” tab of Chrome Dev Tool, the error messages are “404 Not Found” and “NoSuchUpload - The specified upload does not exist. The upload ID may be invalid, or the upload may have been aborted or completed”.

Hope to get some help soon!