How I can resolve the error 403?

I was develop an endpoint, when I testing in my localhost with a mock values, everything goes ok, but when I tried make the same test in my Insomnia, I get 403 error, I have no ideia that how i get this error.

403 ERROR The request could not be satisfied. Bad request. We can’t connect to the server for this app or website at this time. There might be too much traffic or a configuration error. Try again later, or contact the app or website owner. If you provide content to customers through CloudFront, you can find steps to troubleshoot and help prevent this error by reviewing the CloudFront documentation.