Hey guys, so i've been stuck on this problem for awhile now... cant seem to find a problem.

I created api server using nginx and python flask and another server on different ip address is running a web server crated with react.

I got to a point I have added cors stuff to my nginx. so when I

curl -v my.domain.com/some/endpoint
< Server: nginx/1.14.0 (Ubuntu)
< Date: Fri, 20 Mar 2020 04:51:42 GMT
< Content-Type: text/html; charset=utf-8
< Content-Length: 178
< Connection: keep-alive
< Allow: POST, OPTIONS
< Access-Control-Allow-Origin: *
< Access-Control-Allow-Origin: *
< Access-Control-Allow-Headers: Content-Type,Authorization
< Access-Control-Allow-Methods: GET,PUT,POST,DELETE,OPTIONS
< Access-Control-Allow-Credentials: true

I get this result... But when i try to POST something on to the server i still seem to get cors error... have i done something wrong?

This is my /etc/nginx/sites-available/site location codes

location / {
    # include /etc/nginx/cors-settings.conf;
    include uwsgi_params;
    uwsgi_pass unix:///root/io-backend/main.sock;

    add_header "Access-Control-Allow-Origin" *;
    add_header "Access-Control_Allow-Methods" "GET, POST, OPTIONS";

    # Preflighted requests
    if ($request_method = OPTIONS ) {
        add_header "Access-Control-Allow-Origin"  *;
        add_header "Access-Control-Allow-Methods" "GET, POST, OPTIONS, HEAD";
        add_header "Access-Control-Allow-Headers" "Authorization, Origin, X-Requested-With, Content-Type, Accept";
        return 200;
}

I cant seem to get a grasp whether this is still nginx problem or my python code problem... I do have Flask-CORS enabled on my backend tho.

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Any help would be greatly appreciated... been stuck on this for a while now