Ingress / TLS Issue reaching the service in HTTPS


I am using rancher 2.0. Every thing goes as expected but I have some issue reaching out my services with https request.
My certificate is valid, I can reach the service through a browser but as soon as I try to send a POST request from a node.js server I cannot reach the service correctly.
I have to add
- “rejectUnauthorized”: false,
in my request.

What is my mistake in the config?