PlantUML Error when PlantUML file has an include file ('PlantUMLHTTPError' object has no attribute 'message')

[NovoLearn]

Hi, I'm trying to get plantuml to create an SVG from a Plant UML file that has a file include in it

Example Plant UML File: my_yaml_file.puml:

@startyaml my_yaml_file.yml
title my_yaml_file.yml
!include /path/to/my_yaml_file.yml
@endyaml

When plantuml sends to the file to PlantUML server to create a diagram as SVG file, the following error message is returned: ERROR - Error generating diagram my_daigram_name.svg: 'PlantUMLHTTPError' object has no attribute 'message'

The PlantUML Server url for the SVG file creation is: http://my_local_plantUML_server_url/SVG/ENCODED.

Anything that I'm doing wrong here, or a current limitation perhaps?