Preview in example not working

[JackAtOmenApps]

I followed the procedures for running the example project, but Preview doesn't work. I got the following errors:

Internal Server Error: /martor/markdownify/
Traceback (most recent call last):
  File "/home/jdshueu/.local/share/virtualenvs/martor-pW1NQgAM/lib/python3.6/site-packages/Django-2.1.1-py3.6.egg/django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "/home/jdshueu/.local/share/virtualenvs/martor-pW1NQgAM/lib/python3.6/site-packages/Django-2.1.1-py3.6.egg/django/core/handlers/base.py", line 126, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/home/jdshueu/.local/share/virtualenvs/martor-pW1NQgAM/lib/python3.6/site-packages/Django-2.1.1-py3.6.egg/django/core/handlers/base.py", line 124, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/jdshueu/.local/share/virtualenvs/martor-pW1NQgAM/lib/python3.6/site-packages/martor-1.3.3-py3.6.egg/martor/views.py", line 17, in markdownfy_view
    return HttpResponse(markdownify(request.POST['content']))
  File "/home/jdshueu/.local/share/virtualenvs/martor-pW1NQgAM/lib/python3.6/site-packages/martor-1.3.3-py3.6.egg/martor/utils.py", line 28, in markdownify
    extension_configs=MARTOR_MARKDOWN_EXTENSION_CONFIGS
  File "/home/jdshueu/.local/share/virtualenvs/martor-pW1NQgAM/lib/python3.6/site-packages/Markdown-3.0.1-py3.6.egg/markdown/core.py", line 390, in markdown
    md = Markdown(**kwargs)
  File "/home/jdshueu/.local/share/virtualenvs/martor-pW1NQgAM/lib/python3.6/site-packages/Markdown-3.0.1-py3.6.egg/markdown/core.py", line 100, in __init__
    configs=kwargs.get('extension_configs', {}))
  File "/home/jdshueu/.local/share/virtualenvs/martor-pW1NQgAM/lib/python3.6/site-packages/Markdown-3.0.1-py3.6.egg/markdown/core.py", line 126, in registerExtensions
    ext = self.build_extension(ext, configs.get(ext, {}))
  File "/home/jdshueu/.local/share/virtualenvs/martor-pW1NQgAM/lib/python3.6/site-packages/Markdown-3.0.1-py3.6.egg/markdown/core.py", line 181, in build_extension
    return module.makeExtension(**configs)
  File "/home/jdshueu/.local/share/virtualenvs/martor-pW1NQgAM/lib/python3.6/site-packages/martor-1.3.3-py3.6.egg/martor/extensions/del_ins.py", line 48, in makeExtension
    return DelInsExtension(configs=dict(configs))
  File "/home/jdshueu/.local/share/virtualenvs/martor-pW1NQgAM/lib/python3.6/site-packages/Markdown-3.0.1-py3.6.egg/markdown/extensions/__init__.py", line 42, in __init__
    self.setConfigs(kwargs)
  File "/home/jdshueu/.local/share/virtualenvs/martor-pW1NQgAM/lib/python3.6/site-packages/Markdown-3.0.1-py3.6.egg/markdown/extensions/__init__.py", line 73, in setConfigs
    self.setConfig(key, value)
  File "/home/jdshueu/.local/share/virtualenvs/martor-pW1NQgAM/lib/python3.6/site-packages/Markdown-3.0.1-py3.6.egg/markdown/extensions/__init__.py", line 61, in setConfig
    if isinstance(self.config[key][0], bool):
KeyError: 'configs'

[olinox14]

same error here!

[olinox14]

I just found out it is caused by the martor.extensions.del_ins extension: you can fix the bug by removing it from the MARTOR_MARKDOWN_EXTENSIONS list.

[skabbit]

Solving by downgrading Markdown 3.0.1 to 2.6.11
Seem to be the same problem as #49