Cors issue with api gateway

As a developer, I'm dealing with an issue with a Cors-related conflict with api gateway. The programming language I'm using for this API is JavaScript. There are some error messages that I'm receiving, so my preferred method to resolving this is troubleshooting. Therefore, I'm looking for assistance with troubleshooting the issue. If you have experience working with Cors and apis, I would appreciate your help with resolving this issue in a timely manner.

Im using Angular on the FE and the BE is AWS using api gateway.. all requests work in postman but not in the app. I have a GET request that works but the POST request comes back

"has been blocked by CORS policy: Response to preflight request doesnt pass access control check: It does not have HTTP ok status"