Gitea webhook context deadline exceeded (Client.Timeout exceeded while awaiting headers)

We installed Gitea and DroneCI in a EKS cluster using helm. We are using AWS NLB IPs to establish communication between them. DroneCI was able to authorize and activate the repo inside Gitea. But when we update any files inside Gitea it fails to send the webhook to the DroneCI server with the below error.

`Delivery: Post "http://10.22x.xx.xx/hook?secret=qIGg8hkgiBo8nEiiwirhTxwlNWvGEv0": context deadline exceeded (Client.Timeout exceeded while awaiting headers)`

We even have a proper .drone.yml file in the repo as per the suggestion from this link
Please help how to resolve this.