I have problems with Kubernetes. I try to deploy my service for two days now bu I'm doing something wrong.

{
  "kind": "Status",
  "apiVersion": "v1",
  "metadata": {

  },
  "status": "Failure",
  "message": "forbidden: User \"system:anonymous\" cannot get path \"/\": No policy matched.",
  "reason": "Forbidden",
  "details": {

  },
  "code": 403
}

Does anybody knows what the problem could be? Here is also my yaml file:

# Certificate
apiVersion: certmanager.k8s.io/v1alpha1
kind: Certificate
metadata:
 name: ${APP_NAME}
spec:
 secretName: ${APP_NAME}-cert
 dnsNames:
   - ${URL}
   - www.${URL}
 acme:
   config:
     - domains:
         - ${URL}
         - www.${URL}
       http01:
         ingressClass: nginx
 issuerRef:
   name: ${CERT_ISSUER}
   kind: ClusterIssuer

---
# Ingress
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: ${APP_NAME}
  annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/ssl-redirect: 'true'
    nginx.ingress.kubernetes.io/from-to-www-redirect: 'true'
spec:
  tls:
  - secretName: ${APP_NAME}-cert
    hosts:
    - ${URL}
    - www.${URL}
  rules:
  - host: ${URL}
    http:
      paths:
      - backend:
          serviceName: ${APP_NAME}-service
          servicePort: 80

---
# Service
apiVersion: v1
kind: Service
metadata:
  name: ${APP_NAME}-service
  labels:
    app: ${CI_PROJECT_NAME}
spec:
  selector:
    name: ${APP_NAME}
    app: ${CI_PROJECT_NAME}
  ports:
    - name: http
      port: 80
      targetPort: http

---
# Deployment
apiVersion: apps/v1
kind: Deployment
metadata:
  name: ${APP_NAME}
  labels:
    app: ${CI_PROJECT_NAME}
spec:
  replicas: ${REPLICAS}
  revisionHistoryLimit: 0
  selector:
    matchLabels:
      app: ${CI_PROJECT_NAME}
  template:
    metadata:
      labels:
        name: ${APP_NAME}
        app: ${CI_PROJECT_NAME}
    spec:
      containers:
        - name: webapp
          image: eu.gcr.io/my-site/my-site.com:latest
          imagePullPolicy: Always
          ports:
            - name: http
              containerPort: 80
          env:
            - name: COMMIT_SHA
              value: ${CI_COMMIT_SHA}
          livenessProbe:
            tcpSocket:
              port: 80
            initialDelaySeconds: 30
            timeoutSeconds: 1
          readinessProbe:
            tcpSocket:
              port: 80
            initialDelaySeconds: 5
            timeoutSeconds: 1
          resources:
            requests:
              memory: '16Mi'
            limits:
              memory: '64Mi'
      imagePullSecrets:
        - name: ${REGISTRY_PULL_SECRET}

Can anybody help me with this? I'm stuck and I've no idea what could be the problem. This is also my first Kubernetes project.