Set Cookie not working (nextJs + express) - node.js

Question

I'm trying to set the cookie from my express backend to my nextjs front end using the response.setHeader, but it's not working, I get my json response but no cookies are set, I used postman to make some tests and in postman it did set the cookies as it should be.
NextJs version is 13.0.2, express version is 4.18.2 and cookie version is 0.5.0
My express server:
export const loginUser = async (req: Request, res: Response) => {
const { email, password } = req.body;
//limpa os cookies
res.clearCookie("accessToken", { httpOnly: true });
if (email !== "" && password !== "") {
try {
const foundUser: any = await prisma.users.findFirst({
where: {
email,
password,
},
});
try {
const accessToken = jwt.sign(
{ id: foundUser.id, email },
"dspaojdspoadsaodksa",
{
expiresIn: "10s",
}
);
const refreshToken = jwt.sign(
{ id: foundUser.id, email },
"dsaoindsadmnsaosda",
{
expiresIn: "50s",
}
);
const savedRefresh = await prisma.refresh_token.upsert({
where: {
users_id: foundUser.id,
},
update: {
access_token: accessToken,
refresh_tk: refreshToken,
users_id: foundUser.id,
},
create: {
access_expires_in: "",
refresh_expires_in: "",
access_token: accessToken,
refresh_tk: refreshToken,
users_id: foundUser.id,
},
});
res.setHeader(
"Set-Cookie",
cookie.serialize("accessToken", accessToken, {
maxAge: 1000 * 60 * 15, //15 minutes
httpOnly: true, // The cookie only accessible by the web server
})
);
res.json({ accessToken, user: { email }, ok: true });
} catch (error) {
console.log("refresh cant be created");
res.send({ message: "refresh cant be created" });
}
} catch (error) {
res.send({ message: "user not found" });
}
} else {
res.json({ message: "token creation failed" });
}
};
My nextJs front-end:
const handleLogin = async (event: React.SyntheticEvent) => {
event.preventDefault();
const email = (event?.target as any).email.value;
const password = (event?.target as any).password.value;
if (email === "" || password === "") {
setError(true);
return;
}
const data = {
email,
password,
};
const resp = await fetch("http://localhost:5000/login", {
method: "POST",
headers: {
"Content-Type": "application/json",
},
body: JSON.stringify(data),
});
const userData = await resp.json();
console.log(userData);
};