Im working on a settings page with 4 input values on the front end.
I have only one table in the db that i want to update correspond to the input value.
Right now im testing this endpoint in postman , lets start with the function itself:

updateController:

exports.updateSettings = async (req, res) => {
  try {
    // Execute the query and await the result
    const data = await Settings.findOne({}, { _id: 1 }).exec();

    const settingsId = data._id;
    const updatedValue = req.body.newValue;
    const fieldToUpdate = req.body.fieldToUpdate;

    // Update the settings using the settingsId
    await Settings.findByIdAndUpdate(settingsId, {
      $set: { [fieldToUpdate]: updatedValue },
    });

    console.log("AFTER FINDBYIDANDUPDATE"); // im not getting to this part
    res.status(200).json({ message: "update-settings-success" });
  } catch (err) {
    console.error("Error updating settings:", err);
    res.status(500).json({ message: "failed-update-settings" });
  }
};

Settings schema:

const mongoose = require("mongoose");

const settingsSchema = new mongoose.Schema({
createdAt: {
type: Date,
default: Date.now,
},
minBookingLen: {
type: Number,
required: true,
},
maxBookingLen: {
type: Number,
required: true,
},
maxGuestsPerBooking: {
type: Number,
required: true,
},
breakfastPrice: {
type: Number,
required: true,
},
});

const Settings = mongoose.model("Setting", settingsSchema);

module.exports = Settings;

The route:

router.patch("/update-settings", updateSettings.updateSettings);

Ill just mention that the endpoint are connected and working just the thing is that when i on of the values lets say breakfastPrice and the error message im getting:
Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client

Im expecting to show the update-settings-success message but i guess something is off with how im using the findByIdAndUpdate or maybe nesting both requests is wrong.