CORS on https

Hello and thanks in advance for any information you might share.

I have a repo built around this which was working fine when going from http to http API Endpoint... but when deployed into https it's run into CORS issues. Have tried pretty much everything at this point. Figured I'd check in and see if anyone can sanity check the concept in general - is there any reason why this wouldn't work over https? Should I be thinking about this more as a "public key" search client?

I don't want to get too deep into sharing code yet as I'd have to redact but if anyone can sanity check me on whether it's an appropriate use of this for https, I'd appreciate it.

Thank you!