# File uploads failing with status code 404 + upload progress events not being triggered

**URL:** <https://community.transloadit.com/t/file-uploads-failing-with-status-code-404-upload-progress-events-not-being-triggered/16951>\
**Category:** Uppy\
**Created:** [January 10, 2024, 4:07pm UTC](https://community.transloadit.com/t/file-uploads-failing-with-status-code-404-upload-progress-events-not-being-triggered/16951 "2024-01-10T16:07:49Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ammar-rxv](https://yyz2.discourse-cdn.com/flex032/user_avatar/community.transloadit.com/ammar-rxv/32/1049_2.png) [@ammar-rxv](https://community.transloadit.com/u/ammar-rxv)\
**Post date:** [January 10, 2024, 4:07pm UTC](https://community.transloadit.com/t/file-uploads-failing-with-status-code-404-upload-progress-events-not-being-triggered/16951/1 "2024-01-10T16:07:49Z")

</div>

I’m getting the error, “Source map error: Error: request failed with status 404  
Resource URL: null  
Source Map URL: react\_devtools\_backend\_compact.js.map” when uploading a file using DropTarget with autoProceed: true. The error implies that the file being uploaded isn’t present on your device but that isn’t the case. Interestingly after I drag and drop the file into my browser window and then use uppy.upload() method on a button, the upload succeeds. Moreover, I’m using the uppy.on method to capture 3 separate events namely, “complete”, “upload-progress” and “progress”, but none of these events are being captured whenever the upload proceeds.