Surprisingly commenting out “user_attribute_mapping={'uid': ('username',)}” in config file (is uses same thing which is default) does the magic. Looks like following code in libsaml/conf.py is creating problem. def dict_list_map(value):
if isinstance(value, str):
d = {}
for k, v in json.loads(value).iteritems():
d[k] = (v,)
return d
elif isinstance(value, dict):
return value
return None
USER_ATTRIBUTE_MAPPING = Config(
key="user_attribute_mapping",
default={'uid': ('username', )},
type=dict_list_map,
help=_t("A mapping from attributes in the response from the IdP to django user attributes."))
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