Issue Firefox / OpaqueResponseBlocking

[Erwan]

Server operating system version

AlmaLinux 9.4

Plesk version and microupdate number

18.0.60

Hi all,

I have a website (www.mydomain.com) and another website with data / images (data.mydomain.com) ont he same server under Plesk.
All works fine with Chrome and Edge but with Firefox, image don't displayed.

In the console, there is: A resource is blocked by OpaqueResponseBlocking, please check browser console for details.

I try to change headers like that but no effect.

Apache
Header set Access-Control-Allow-Origin "*"
Header set Access-Control-Allow-Methods "GET, POST, OPTIONS"
Header set Access-Control-Allow-Headers "Content-Type"

Nginx
add_header 'Access-Control-Allow-Origin' '*';
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
add_header 'Access-Control-Allow-Headers' 'Content-Type';

An idea?
Thank you

Erwan

 

[scsa20]

Is your site calling data.mydomain.com using HTTPS? If not then that would more likely be the issue, make sure your resources is using HTTPS instead of HTTP.