As far as I remember it also loads the parameter definition for feeding the "34 Meteobridge" upload to your web server. When I get you code snippet right there is not data added past the "d=" string. Which is odd.
Do you still have the issue? If so I could login remotely and check a few things, of you send me credentials.
Looks like I discovered the potential issue...PHP version upgrade on webserver
My web server has always run 7.4 but I upgraded to a newer version 8.x given the new Aurora Meteobridge November 2025 template prefers... When I did that my older William (Lightmaster) Weather34 template stopped loading giving 500 error and the upload failed from NanoSD to the API url.
If I roll back to PHP 7.x there is no issues other than my expanded large weather cam php in Aurora Meteobridge November 2025 doesn't load and I had to hard code url in the config file..
So i'm going to say the breakage is due to upgrading to PHP 8.x on my webserver...