Kibana is not starting

[ashokreddy-gh]

I want to Tls communication between kibana server and browser, so i added below lines to /opt/kibana/config/kibana.yml , and kibana is not starting

server.ssl.key: /etc/ssl/private/server.key
server.ssl.certificate: /etc/ssl/certs/server.crt
xpack.security.encryptionKey: "somethingatleast32characterspasswordshouldenable"
xpack.security.sessionTimeout: 600000
xpack.reporting.encryptionKey: "9eXx*#T8'B;gzy*"

but i could able to start kibana by executing this command bin/kibana -c config/kibana.yml .... and not able start with service kibana start even error log also not generating