Expected behaviour

Successful login through ORCID backend.

Actual behaviour

Authentication crashes with:
AttributeError: 'NoneType' object has no attribute 'get'

What are the steps to reproduce this issue?

1. Create an ORCID account WITHOUT specifying a "Last Name".
2. Try social auth

Any logs, error output, etc?

if "Last Name" is not provided in the ORCID account,
name in .../backends/orcid.py", about line 77 will be
name = {'created-date': {.... 'family-name': None, ....}

and in line 77, last_name = name.get('family-name', {}).get('value', '')

a get is used on a None type.

File ".../lib/python3.9/site-packages/social_core/backends/orcid.py", line 77, in get_user_details
last_name = name.get('family-name', {}).get('value', '')
AttributeError: 'NoneType' object has no attribute 'get'