OpenAtlas

I found the culprit, it wasn't Turtle specific but code that looked like:

if 'http' in app.config['PROXIES']

But app.config['PROXIES'] can be None (default) which than throws the error.

Simplest solution would be to set the default to an empty dict

app.config['PROXIES'] = {}

Please report in case someone needs this and has similar problems still. In that case I would think about a quicker solution, e.g. a fix release

Thanks Bernhard for feedback, it is now fixed in the develop branch with the following line in config/default.py:

PROXIES: dict[str, str] = {}