aspnetcore: Kestrel does not listen for https when run as a service on Ubuntu

I am trying to host an ASP.Net Core MVC application (https redirection is enabled) on Ubuntu server, using Nginx as a reverse proxy. I have created and installed a local SSL certificate using OpenSSL. When i run my application using dotnet CLI it listens on both http://localhost:5000 & https://localhost:5001, and i am able to access it on web using https (http requests are being redirect to https by Nginx).

The problem is when i try to run the as a service, it only listens on http://localhost:5000.

Here’s the *.service file :

[Unit]
Description=Test ASP.Net core web application service.

[Service]
WorkingDirectory=/home/ubuntu/MyAppFolder
ExecStart=/usr/bin/dotnet/home/ubuntu/MyAppFolder/MyApplication.dll
Restart=always
# Restart service after 10 seconds if the dotnet service crashes:
RestartSec=10
SyslogIdentifier=MyApplication
User=www-data
Environment=ASPNETCORE_ENVIRONMENT=Development
Environment=DOTNET_PRINT_TELEMETRY_MESSAGE=false
Environment=ASPNETCORE_HTTPS_PORT=5001
Environment=ASPNETCORE_URLS=http://localhost:5000;https://localhost:5001

[Install]
WantedBy=multi-user.target

Environment details : ASP.Net Core 2.1.1, ASP.Net Core SDK 2.1.3, Nginx 1.14, Ubuntu 16.04