Traceback: Traceback (most recent call last):
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\flask\app.py", line 1473, in wsgi_app
    response = self.full_dispatch_request()
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\flask\app.py", line 882, in full_dispatch_request
    rv = self.handle_user_exception(e)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\flask_cors\extension.py", line 178, in wrapped_function
    return cors_after_request(app.make_response(f(*args, **kwargs)))
                                                ^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\flask\app.py", line 880, in full_dispatch_request
    rv = self.dispatch_request()
         ^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\flask\app.py", line 865, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)  # type: ignore[no-any-return]
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\OneDrive\Documents\Programming\Visual Studio 2022\PARTS_Web\app\controllers\store\supplier.py", line 43, in suppliers
    return render_template('pages/store/_suppliers.html', model = model, datetime = datetime)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\flask\templating.py", line 150, in render_template
    return _render(app, template, context)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\flask\templating.py", line 131, in _render
    rv = template.render(context)
         ^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\jinja2\environment.py", line 1304, in render
    self.environment.handle_exception()
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\jinja2\environment.py", line 939, in handle_exception
    raise rewrite_traceback_stack(source=source)
  File "C:\Users\edwar\OneDrive\Documents\Programming\Visual Studio 2022\PARTS_Web\app\templates\pages\store\_suppliers.html", line 1, in top-level template code
    {% extends 'layouts/layout.html' %}
    ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\OneDrive\Documents\Programming\Visual Studio 2022\PARTS_Web\app\templates\layouts\layout.html", line 328, in top-level template code
    {% block page_body %}{% endblock %}
    ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\OneDrive\Documents\Programming\Visual Studio 2022\PARTS_Web\app\templates\pages\store\_suppliers.html", line 41, in block 'page_body'
    {% include 'components/store/_row_supplier.html' %}
    ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\OneDrive\Documents\Programming\Visual Studio 2022\PARTS_Web\app\templates\components\store\_row_supplier.html", line 47, in top-level template code
    {% include 'components/store/_preview_address.html' %}
    ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\OneDrive\Documents\Programming\Visual Studio 2022\PARTS_Web\app\templates\components\store\_preview_address.html", line 4, in top-level template code
    {% set json_str = address.to_json_str() %}
    ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\OneDrive\Documents\Programming\Visual Studio 2022\PARTS_Web\app\business_objects\store\supplier_address.py", line 88, in to_json_str
    return jsonify(self.to_json())
                   ^^^^^^^^^^^^^^
  File "C:\Users\edwar\OneDrive\Documents\Programming\Visual Studio 2022\PARTS_Web\app\business_objects\store\supplier_address.py", line 79, in to_json
    self.FLAG_REGION: self.region.to_json(),
                      ^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'to_json'

Exception on /store/suppliers [GET]
Traceback (most recent call last):
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\flask\app.py", line 1473, in wsgi_app
    response = self.full_dispatch_request()
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\flask\app.py", line 882, in full_dispatch_request
    rv = self.handle_user_exception(e)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\flask_cors\extension.py", line 178, in wrapped_function
    return cors_after_request(app.make_response(f(*args, **kwargs)))
                                                ^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\flask\app.py", line 880, in full_dispatch_request
    rv = self.dispatch_request()
         ^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\flask\app.py", line 865, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)  # type: ignore[no-any-return]
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\OneDrive\Documents\Programming\Visual Studio 2022\PARTS_Web\app\controllers\store\supplier.py", line 43, in suppliers
    return render_template('pages/store/_suppliers.html', model = model, datetime = datetime)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\flask\templating.py", line 150, in render_template
    return _render(app, template, context)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\flask\templating.py", line 131, in _render
    rv = template.render(context)
         ^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\jinja2\environment.py", line 1304, in render
    self.environment.handle_exception()
  File "C:\Users\edwar\AppData\Local\Programs\Python\Python312\Lib\site-packages\jinja2\environment.py", line 939, in handle_exception
    raise rewrite_traceback_stack(source=source)
  File "C:\Users\edwar\OneDrive\Documents\Programming\Visual Studio 2022\PARTS_Web\app\templates\pages\store\_suppliers.html", line 1, in top-level template code
    {% extends 'layouts/layout.html' %}
    ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\OneDrive\Documents\Programming\Visual Studio 2022\PARTS_Web\app\templates\layouts\layout.html", line 328, in top-level template code
    {% block page_body %}{% endblock %}
    ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\OneDrive\Documents\Programming\Visual Studio 2022\PARTS_Web\app\templates\pages\store\_suppliers.html", line 41, in block 'page_body'
    {% include 'components/store/_row_supplier.html' %}
    ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\OneDrive\Documents\Programming\Visual Studio 2022\PARTS_Web\app\templates\components\store\_row_supplier.html", line 47, in top-level template code
    {% include 'components/store/_preview_address.html' %}
    ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\OneDrive\Documents\Programming\Visual Studio 2022\PARTS_Web\app\templates\components\store\_preview_address.html", line 4, in top-level template code
    {% set json_str = address.to_json_str() %}
    ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\edwar\OneDrive\Documents\Programming\Visual Studio 2022\PARTS_Web\app\business_objects\store\supplier_address.py", line 88, in to_json_str
    return jsonify(self.to_json())
                   ^^^^^^^^^^^^^^
  File "C:\Users\edwar\OneDrive\Documents\Programming\Visual Studio 2022\PARTS_Web\app\business_objects\store\supplier_address.py", line 79, in to_json
    self.FLAG_REGION: self.region.to_json(),
                      ^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'to_json'
Server Error: 500 Internal Server Error: The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.