Node, Mongoose - $or operator not functioning as expected

Within my express app, I have a mongoose schema like so:

User model schema:

const userSchema = new mongoose.Schema({    username: {      type: String,      required: true,      unique: true,      minlength: 4,      maxlength: 50    },    email: {      type: String,      required: true,      minlength: 3,      maxlength: 255,      unique: true    },    password: {      type: String,      required: true,      minlength: 6,    },})

Here is an operation I do in one of my endpoints. I expect a user to be returned if req.body.usernameOrEmail matches a username or email of a User. Here is the operation:

let user = await User.find({ $or: [ { username: req.body.usernameOrEmail }, { email: req.body.usernameOrEmail } ] })if (!user) return res.send('No user found')

What happens is that if I put anything req.body.usernameOrEmail, the 'No user found' message is not printed as expected. Anybody know whats going wrong with the operation performed above? Thanks.