WebSocket errors with Mattermost Kubernetes 5.3.1

Troubleshooting
8

This is the service we are using

apiVersion: v1
kind: Service
metadata:
  name: mattermost-app-service
  labels:
    app: <LABEL HERE IF YOU ARE USING THAT>
spec:
  selector:
    app: <LABEL HERE IF YOU ARE USING THAT>
  type: ClusterIP
  ports:
  - port: 8065
    targetPort: 8065
    protocol: TCP
    name: app