>>73172638First time in web dev? Cross-origin requests from JS are a huge pain.
Any chance you can spin up a local server process to proxy your JS client requests for you? If you want something pre-built, this should work, albeit a little clunky:
https://github.com/Rob--W/cors-anywhere/Please note that I have no idea what Dulst is or what you're trying to do, so this suggestion might not be a good one.