Default anonymous upload to ImgSafe fails, 404

[grahamperrin]

1.5.20 with Waterfox 56.2.3:

Upload failed.
404 Not Found

Tested with the https://www.mozilla.org/media/img/firefox/organizations/release-overview.d8ca18efe06f.png image that's within https://www.mozilla.org/en-US/firefox/organizations/

@xiaoxiaoflood re: https://redd.it/9adz7b I get the same failure with 1.5.21.62.2018.08.26-xiao, which (I know) was not intended for Waterfox, but I thought I'd give it a try.

[RandomEngy]

Hey sorry, I'm not maintaining or using the extension anymore. You're welcome to take over if you like.

[grahamperrin]

Understood, thanks.

I have a more significant problem that seems to involve the extension, would you like it raised as a separate issue in this repo? Not expecting support from you; just to have things in one place.

TIA

[RandomEngy]

Open as many issues as you like.