Hi I am getting error of cors on my vercel web app, I have setup cors on my backend properly but it still occurs, can you tell me why thanks.

hey @umair_03386 can i see how you have setup the cors middleware on your backend?

supertokens.init({ framework: "express", supertokens: { connectionURI: "https://st-dev-369838c0-b579-11ee-99f9-f340bd017302.aws.supertokens.io", apiKey: "WIyZf2oKVE-z7qRJR4Xe0ngH6A", }, appInfo: { appName: "SassySpy", apiDomain: process.env.NODE_ENV === "dev" ? "http://localhost:5000" : "https://api.sassyspy.com", websiteDomain: process.env.NODE_ENV === "dev" ? "http://localhost:5173" : "https://sassyspy-front.vercel.app/", apiBasePath: "/auth", websiteBasePath: "/auth", }, recipeList: [ Passwordless.init({ flowType: "USER_INPUT_CODE", contactMethod: "EMAIL", }), Dashboard.init(), Session.init({ exposeAccessTokenToFrontendInCookieBasedAuth: true, }), UserRoles.init(), ], }); const app = express(); // Connect to the database connectDB(); // Middleware app.use( cors({ origin: process.env.NODE_ENV === "dev" ? "http://localhost:5173" : "https://sassyspy-front.vercel.app/", allowedHeaders: ["content-type", ...supertokens.getAllCORSHeaders()], credentials: true, }) ); app.use(middleware()); here it is

right. You might want to check if there is a cors setting on vercel's dashboard as well.. im not too sure

I am doing not nothing else but this on backend, just a simple passwordless email login from frontend

im not sure. Sorry. Cors is not directly related to supertokens since another lib is used for it

okay so is there anything else that I need to do besides this, it is working fine on my local system

nothing that i know of. Might want to as vercel community

hmm right, I guess I'll have to research on this a little