Adding Swagger configuration that I thought might not be needed.

cms/envs/common.py

@@ -47,7 +47,7 @@ import lms.envs.common
 from lms.envs.common import (
     USE_TZ, TECH_SUPPORT_EMAIL, PLATFORM_NAME, BUGS_EMAIL, DOC_STORE_CONFIG, DATA_DIR, ALL_LANGUAGES, WIKI_ENABLED,
     update_module_store_settings, ASSET_IGNORE_REGEX, COPYRIGHT_YEAR,
-    PARENTAL_CONSENT_AGE_LIMIT, COMPREHENSIVE_THEME_DIRS, REGISTRATION_EMAIL_PATTERNS_ALLOWED,
+    PARENTAL_CONSENT_AGE_LIMIT, COMPREHENSIVE_THEME_DIRS, REGISTRATION_EMAIL_PATTERNS_ALLOWED, REGISTRATION_EXTRA_FIELDS,
     # The following PROFILE_IMAGE_* settings are included as they are
     # indirectly accessed through the email opt-in API, which is
     # technically accessible through the CMS via legacy URLs.

lms/djangoapps/course_api/serializers.py

@@ -17,8 +17,8 @@ class _MediaSerializer(serializers.Serializer):  # pylint: disable=abstract-meth
     """
 
     def __init__(self, uri_attribute, *args, **kwargs):
+        self.uri_attribute = kwargs.pop("uri_attribute", None)
         super(_MediaSerializer, self).__init__(*args, **kwargs)
-        self.uri_attribute = uri_attribute
 
     uri = serializers.SerializerMethodField(source='*')