Serving default cert for request: "<hostname>"

Traefik version 1.7.15. There's 2 services kid4 and khub. When user hits the https://<domain_name> the kid4 response correctly. But when user hits https://<domain_name>/hub then there's error on request.

Here's my trafik file:-

defaultEntryPoints = ["http", "https"]
logLevel = "DEBUG"



address = ":81"

entrypoint = "https"

address = ":443"


certFile = "C:\\Users\\Administrator\\Desktop\\STAR_domain_net.crt"
keyFile = "C:\\Users\\Administrator\\Desktop\\STAR_domain_net.key"




url = "http://localhost:5003"



url = "http://localhost:5004"


backend = "khub"
passHostHeader = true


rule = "PathPrefixStrip:/hub;AddPrefix:/hub"

backend = "kid4"
passHostHeader = true

Traefik logs

DEBU[2020-01-13T11:38:17Z] Serving default cert for request: "<hostname>"
DEBU[2020-01-13T11:38:20Z] Serving default cert for request: "<hostname>"
DEBU[2020-01-13T11:38:23Z] Serving default cert for request: "<hostname>"

Application logs:-

hub https:///hub Not Connected:The SSL connection could not be established, see inner exception., The remote certificate is invalid according to the validation procedure.. Retry in 3 second

Note:- If I ran the application on port 81, all the components works as expected. Seems the error due to TLS only