Poétesses d'expression française (du Moyen-Age au XXème siècle)

Hi,

Trying to upload pictures to the sandbox with code that works fine on production (UploadSiteHostedPictures w/Binary encoded attachment), but on sandbox I am getting an error back of 2146697208 - The download of the specified resource has failed.
I switch to production and it works fine, I can modify an item on sandbox fine using ReviseFixedPriceItem, so it doesn't appear to be a key/token issue, the error is returning right away from the httpxml send request and not returning an ebay xml response. it's been happening all morning/afternoon. Is there something funky going on with sandbox?

Please help.

I didn't find the right solution from the Internet.

References:-
https://ebay.to/2rZkca9
Infographic design agency

Thanks