The entrypoint of our C# program is by default a static void Main function, it should look something like that:

internal class Program
{
    static void Main(string[] args)
    {
        Console.WriteLine("Hello World!");
    }
}

Modern day C# applications tend to use async…await, which requires to assign async to the function like following:

static async void Main(string[] args)

This would cause an error when running the application:

Important: We should avoid async void and only use it if we really know what we are doing.

The solution is quite straightforward, update void to Task:

internal class Program
{
    static async Task Main(string[] args)
    {
        Console.WriteLine("Hello World!");
    }
}

Happy coding!