Trying to get my Condensation Prediction App working

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Hi so I have been trying for weeks to get my Condensation Prediction App working with no luck. (I have minimum to no coding experience, but I can follow along somewhat. I have assembled a mash of code from all over the place but I cant get it working.)

I am sure someone will be able to look at it and suggest fixes in 10 seconds!

Issues...

  1. I dont think the device can see the setting in the app, leading to "java.lang.NullPointerException: Cannot get property 'outsideTempDevice' on null object on line 37 (method pollSensors)" error
  2. The goal is to be able to show the prediction of the device in the dashboard.

Anyone fancy helping me out?

---Here is the device code----

definition(
name: "Condensation Prediction App",
namespace: "KHR1", // Replace with your desired namespace
author: "Your Name", // Replace with your name
description: "Predicts condensation based on temperature and humidity",
category: "Convenience",
iconUrl: "",
iconX2Url: ""
)

preferences {
section("Sensors") {
input "outsideTempDevice","capability.temperatureMeasurement", title: "Outside Temperature Sensor", multiple: false, required: true
input "insideTempDevice", "capability.temperatureMeasurement", title: "Inside Temperature Sensor", multiple: false, required: true
input "insideHumidityDevice", "capability.relativeHumidityMeasurement", title: "Inside Humidity Sensor", multiple: false, required: true
}
}
def installed() {
initialize()
}

def updated() {
unsubscribe()
initialize()
}

def initialize() {
// Create or update the virtual device
createOrAdjustVirtualDevice()
}

def createOrAdjustVirtualDevice() {
def deviceName = "VirtualCondensationPrediction2"
def deviceNamespace = "KHR1"
def deviceNetworkId = "d5dafb13"

def existingDevice = getChildDevices().find { device.deviceNetworkId == deviceNetworkId }
if (existingDevice) {
    existingDevice.deviceNetworkId = deviceNetworkId
    existingDevice.updateDataValue("outsideTempDevice", deviceSettings.outsideTempDevice)
    existingDevice.updateDataValue("insideTempDevice", deviceSettings.insideTempDevice)
    existingDevice.updateDataValue("insideHumidityDevice", deviceSettings.insideHumidityDevice)
} else {
    addChildDevice(deviceNamespace, deviceName, deviceNetworkId)
    sendEvent(name: "outsideTempDevice", value: deviceSettings.outsideTempDevice)
    sendEvent(name: "insideTempDevice", value: deviceSettings.insideTempDevice)
    sendEvent(name: "insideHumidityDevice", value: deviceSettings.insideHumidityDevice)
}

}

---Here is the device code-----
metadata {
definition (name: "VirtualCondensationPrediction2", namespace: "KHR1", author: "Your Name"){
capability "Sensor"
command "setcondensationPrediction", ["STRING"]
attribute "condensationPrediction", "String"
command "setoutsideTemp", ["NUMBER"]
attribute "outsideTemp", "Number"
command "setinsideTemp", ["NUMBER"]
attribute "insideTemp", "Number"
command "setinsideHumidity", ["NUMBER"]
attribute "insideHumidity", "Number"
}
}

def installed() {
initialize()
}

def updated() {
unsubscribe()
initialize()
}

def initialize() {
// Assuming the deviceNetworkId is set correctly in the app
def deviceNetworkId = "d5dafb13"

// Fetch device settings from the app using deviceNetworkId
def outsideTempDevice = getChildDevice(deviceNetworkId).getDataValue("outsideTempDevice")
def insideTempDevice = getChildDevice(deviceNetworkId).getDataValue("insideTempDevice")
def insideHumidityDevice = getChildDevice(deviceNetworkId).getDataValue("insideHumidityDevice")

runEvery15Minutes(pollSensors)

}

def pollSensors() {
def outsideTemp = getTemperature(deviceSettings.outsideTempDevice)
def insideTemp = getTemperature(deviceSettings.insideTempDevice)
def insideHumidity = getHumidity(deviceSettings.insideHumidityDevice)

def prediction = predictCondensation(outsideTemp, insideTemp, insideHumidity)

setAttribute("outsideTemp", outsideTemp)
setAttribute("insideTemp", insideTemp)
setAttribute("insideHumidity", insideHumidity)
setAttribute("condensationPrediction", prediction)

}

def calculateDewPoint(temperature, relativeHumidity) {
def a = 17.625
def b = 243.04
def alpha = (a * temperature) / (b + temperature) + Math.log10(relativeHumidity / 100)
return (b * alpha) / (a - alpha)
}

def predictCondensation(outsideTemp, insideTemp, insideHumidity) {
def windowSurfaceTemp = (insideTemp + outsideTemp) / 2
def dewPoint = calculateDewPoint(insideTemp, insideHumidity)

if (windowSurfaceTemp <= dewPoint) {
    return "Condensation is likely to occur."
} else {
    return "Condensation is unlikely."
}

}

// Helper methods to get sensor values using capability identifiers
def getTemperature(device) {
return device.currentValue("temperature")
}

def getHumidity(device) {
return device.currentValue("humidity")
}

thanks in advance!