CORS issues , preflight is working

i tried all method , but still exist cors issue,
in my case preflight connection working properly it returns 200
But actual response fail

here , my code is
`const app = require("lambda-api")();
app.use((req, res, next) => {
res.cors();
next();
});
app.get("/connect", async (req, res) => {
return res.send({ status: "testing" });
});

app.options("/*", (req, res) => {
res.cors();
return res.status(200).json({});
});
module.exports.connect = async (event, context) => {
return await app.run(event, context);
};`

@btakita
thank you

Start by reproducing the reported app with the /connect route, middleware res.cors(), and the app.options("/*") handler. Inspect the actual response headers from the request after a successful preflight and compare them with the expected CORS headers. Done means the actual response succeeds cross-origin, not only the preflight.