Deploy Ingress for a 3-tier MERN stack app while using Metallb

https://github.com/mrunal-modi/MERN-ToDoApp

cd ./MERN-ToDoApp/k8s/netapp/app-yaml
kubectl create ns todoapp

kubectl apply -f database-pvc.yaml -n todoapp
kubectl apply -f database-deployment.yaml -n todoapp
kubectl apply -f database-service.yaml -n todoapp

kubectl apply -f backend-env-configmap.yaml -n todoapp
kubectl apply -f backend-deployment.yaml -n todoapp
kubectl apply -f backend-service.yaml -n todoapp

kubectl apply -f frontend-env-configmap.yaml -n todoapp
kubectl apply -f frontend-deployment.yaml -n todoapp
kubectl apply -f frontend-service.yaml -n todoapp

The issue is with Ingress below -
kubectl apply -f ingress.yaml -n todoapp