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

**URL:** <https://community.transloadit.com/t/uppy-aws-multipart-error-non-2xx-at-xmlhttprequest/16202>\
**Category:** Uppy\
**Created:** [August 10, 2022, 7:04pm UTC](https://community.transloadit.com/t/uppy-aws-multipart-error-non-2xx-at-xmlhttprequest/16202 "2022-08-10T19:04:09Z")\
**Posts on this page:** 1\
**Page:** 1

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**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 10, 2022, 7:04pm UTC](https://community.transloadit.com/t/uppy-aws-multipart-error-non-2xx-at-xmlhttprequest/16202/1 "2022-08-10T19:04:09Z")

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I am currently using AWS Multipart plugin without companion url to upload large file (about 10MB) to AWS S3 bucket.

The stages of logic are:

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. Uppy will send a request to complete the multipart upload.

I passed stage 1 and stage 2. I had an upload ID for a multipart upload and pre-signed URL for each parts.  
However, when Uppy tries to upload to S3, I got an “Error: Non 2xx at XMLHttpRequest” error and failed upload in stage 3. In “Network” tab of Chrome Dev Tool, it shows “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” error messages.

Hope to hear you soon.