Fix nginx Cors Issue with APP (no app code change)

POST calls are failing with CORS issue. There is some nginx configuration required to fix the issue. I already tried below - if ($request_method ~* "(GET|POST)") { add_header "Access-Control-Allow-Origin" "*" always; } # Preflighted requests if ($request_method = 'OPTIONS' ) { add_header 'Access-Control-Allow-Origin' "*" always; add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS'; add_header 'Access-Control-Allow-Headers' 'Accept,Authorization,Cache-Control,Content-Type,DNT,If-Modified-Since,Keep-Alive,Origin,User-Agent,X-Requested-With' always; add_header 'Access-Control-Max-Age' 1728000; add_header 'Content-Type' 'text/plain; charset=utf-8'; add_header 'Content-Length' 0; return 204; } Access to XMLHttpRequest at '[login to view URL]' from origin '[login to view URL]' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. vendors~[login to view URL]:1 POST [login to view URL] net::ERR_FAILED