Upload is stuck on "This upload is being processed. Please wait a few seconds."

Trying to upload some images onto Danbooru, but when I finished tagging and hitting submit, I'm sent to this weird error message:

Upload #4971028/Upload #4971027

Date: 2022-02-02 01:06:04 -0500
Source: https://www.pixiv.net/en/artworks/90472854
Tags: tagme

This upload is being processed. Please wait a few seconds.

You can upload another file or view your current uploads.

Anyone know what it is?

I'm using the Post to Danbooru bookmarklet, add my ratings and tags and get these messages:

Edit: Ok my uploads made it. Whatever it was is fixed.

Upload #4971104 Rating q
Source https://twitter.com/sr33023302/status/148859176... »
Tags tagme
g3gen »
2 minutes ago error: MediaAsset::Error - Upload failed, try again (upload was stuck in 'processing' state)

Well, the posts went through, so...

Should be working again. Network maintenance at our host apparently caused us to lose connectivity to one of our image servers, which broke uploads because we couldn't save images to the server. The unreachable server has been disabled for the time being.

https://status.us.ovhcloud.com/pages/maintenance/59dd23da8827c804746f1664/61f93b8c1302de053277fad6

Thanks for quickly resolving this.