How to enable and test CORS on Plesk

https://stackoverflow.com/questions/12173990/how-can-you-debug-a-cors-request-with-curl
https://support.plesk.com/hc/en-us/articles/115001338265-How-to-set-up-CORS-cross-origin-resource-sharing-in-Plesk-for-Linux-

and

https://awesometoast.com/cors/