How to prevent Response for preflight has invalid HTTP status code 404

robo0701

I made the following sources, but I got an error.

How can I solve it?

var request = new XMLHttpRequest();
request.open("GET", url, true);
request.setRequestHeader("Authorization", "Bearer 2687132-xxxxxxxx");
request.send();

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XMLHttpRequest cannot load https://webapi.teamviewer.com/api/xxxx
Response for preflight has invalid HTTP status code 404

 

robo0701

I dont have no idea. I implemented in Java instead of javascript.