thanks to MrCSUI, my problem was the same but I had the error only in build server. only add a throw to program.cs and test again. the error will shows up.

catch (Exception ex)
{
    Log.Fatal(ex, "Unhandled exception");
    if (enviornment == "IntegrationTest")
    {
        throw;
    }
}
finally
{
    Log.Information("Shut down complete");
    Log.CloseAndFlush();
}