Bug overview description.
i tried to upload post #1045216 and post #1045223 through e926 and it didnt work. uploading through e621 worked without any issues so the problem seems to be in e926.

What part(s) of the site page(s) are affected?
e926 upload page.

What is the expected behavior?
image is supposed to be uploaded on site.

What actual behavior is given instead?
the image did not get uploaded on site.

Can you reproduce the bug every time?
yes

What steps did you take to replicate this bug?
i tried to reupload few times, i tried to upload another file few times and i tried uploading after restarting browser

Errors or other messages returned (if any).
i got bad gateway error message

Confirmed, testing seems to indicate that the requests are not properly being routed. Investigating.

Issue has been fixed. For my own sake, this is related to nginx and rebooting, not the application.