nginx Reverseproxy for Kibana gives empty dashboard on kubernetes - nginx

Question

We have Deployed Kibana & Elastic Search on our Kubernetes Cluster. I want to access Kibana via my Nginx by configuring reverse proxy . I am able to configure the nginx.conf with kibana url but when I go to nginx_url/Kibana it gives me a White Dashboard ,no content on the web . It is Strange because i got it worked on my Local machine & it worked but same configuration on kubernetes giving me Empty response .
Below is my Kibana deployment file
apiVersion: apps/v1
kind: Deployment
metadata:
#namespace: vpd-cluster-elk
name: kibana
labels:
app: kibana
spec:
replicas: 1
selector:
matchLabels:
app: kibana
template:
metadata:
labels:
app: kibana
spec:
containers:
- name: kibana
image: docker.elastic.co/kibana/kibana:7.10.1
resources:
limits:
cpu: 1000m
requests:
cpu: 100m
env:
- name: ELASTICSEARCH_URL
value: "http://ES_Url:9200"
- name: SERVER_BASEPATH
value: "/app/home"
- name: SERVER_REWRITEBASEPATH
value: "false"
ports:
- containerPort: 5601
volumes:
- name: "config"
configMap:
name: kibana-config
---
apiVersion: v1
kind: Service
metadata:
#namespace: vpd-cluster-elk
name: kibana
labels:
app: kibana
spec:
ports:
- port: 5601
targetPort: 5601
selector:
app: kibana
type: LoadBalancer
---
apiVersion: v1
kind: ConfigMap
metadata:
name: kibana-config
data:
kibana.yml: |
---
server.name: kibana
elasticsearch.url: http://ES_url:9200
# server.basePath: /app/home
# server.rewriteBasePath: true
Below is my Nginx.conf file
apiVersion: v1
kind: ConfigMap
metadata:
name: nginx-conf
data:
nginx.conf: |
worker_processes 1;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
sendfile on;
keepalive_timeout 65;
# To allow special characters in headers
ignore_invalid_headers off;
client_max_body_size 0;
proxy_buffering off;
server {
listen 80;
server_name _;
location /app/home{
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
proxy_pass http://Kibana_Url:5601;
}
}
}
Kindly let me know what I am wrong or do i need any additional configurations