Hi, every time i need to log in or create a new account i get back "Application failed to respond"

There should be no issue with the Port
const port = process.env.PORT || 8080;

Neither with the host
server.listen(port, "0.0.0.0", () => {
console.log(Server is running on port ${port});
});

And it's using (either way) a local strategy as below

passport.use(
new LocalStrategy(
{ usernameField: "email" },
async (email, password, done) => {
try {
const user = await User.findOne({ email });
if (!user) {
return done(null, false, { message: "Incorrect Email" });
}
const isPasswordValid = await bcrypt.compare(password, user.password);
if (!isPasswordValid) {
return done(null, false, { message: "Incorrect Password" });
}
return done(null, user);
} catch (error) {
return done(error);
}
}
)
);

// Serializer & Deserializer
passport.serializeUser((user, done) => {
done(null, user.id);
});
passport.deserializeUser(async (id, done) => {
try {
const user = await User.findById(id);
done(null, user);
} catch (err) {
done(err);
}
});

// Exports
module.exports = passport;