AttributeError: 'NoneType' object has no attribute 'get'

[sentry]

Sentry Issue: PYTHON-DJANGO-1EZ

AttributeError: 'NoneType' object has no attribute 'get'
(6 additional frame(s) were not displayed)
...
  File "reader/views.py", line 301, in base_props
    "notifications": profile.recent_notifications(scope=active_module).client_contents(),
  File "sefaria/model/notification.py", line 420, in client_contents
    return [n.client_contents() for n in self]
  File "sefaria/model/notification.py", line 420, in <listcomp>
    return [n.client_contents() for n in self]
  File "sefaria/model/notification.py", line 310, in client_contents
    annotate_sheet(n, n["content"]["sheet_id"])
  File "sefaria/model/notification.py", line 291, in annotate_sheet
    n["content"]["sheet_title"] = strip_tags(sheet_data.get("title", ""), remove_new_lines=True)

{'request_id': '2119c378-ba32-4ad6-97b7-aa4ea9d80217', 'code': 500, 'error': AttributeError("'NoneType' object has no attribute 'get'"), 'error_traceback': ['  File "/usr/local/lib/python3.9/site-packages/django/core/handlers/base.py", line 185, in _get_response\n    response = wrapped_callback(request, *callback_args, **callback_kwargs)\n', '  File "/usr/local/lib/python3.9/site-packages/sentry_sdk/integrations/django/views.py", line 84, in sentry_wrapped_callback\n    return callback(request, *args, **kwargs)\n', '  File "/usr/local/lib/python3.9/site-packages/django/utils/decorators.py", line 149, in _wrapped_view\n    response = view_func(request, *args, **kwargs)\n', '  File "/app/sourcesheets/views.py", line 72, in sheets_home_page\n    return menu_page(request, page="voices", title=title, desc=desc)\n', '  File "/app/sefaria/system/decorators.py", line 96, in wrapper\n    result = func(request, *args, **kwargs)\n', '  File "/app/reader/views.py", line 1140, in ...