(venv) PS C:\django-rest-framework-json-api>
(venv) PS C:\django-rest-framework-json-api> django-admin loaddata drf_example --settings=example.settings
System check identified some issues:

WARNINGS:
example.Author: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
example.AuthorBio: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
example.AuthorBioMetadata: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
example.AuthorType: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
example.Blog: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
example.Comment: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
example.Company: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
example.Entry: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
example.LabResults: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
example.Project: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
example.ProjectType: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
example.TaggedItem: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
tests.BasicModel: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
tests.ForeignKeySource: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
tests.ForeignKeyTarget: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
tests.ManyToManySource: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
tests.ManyToManyTarget: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
tests.NestedRelatedSource: (models.W042) Auto-created primary key used when not defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the AppConfig.default_auto_field attribute to point to a subclass of AutoField, e.g. 'django.db.models.BigAutoField'.
Traceback (most recent call last):
File "C:\django-rest-framework-json-api\venv\lib\site-packages\django\db\models\options.py", line 668, in get_field
return self.fields_map[field_name]
KeyError: 'type'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\django-rest-framework-json-api\venv\lib\site-packages\django\core\serializers\json.py", line 70, in Deserializer
yield from PythonDeserializer(objects, **options)
File "C:\django-rest-framework-json-api\venv\lib\site-packages\django\core\serializers\python.py", line 131, in Deserializer
field = Model._meta.get_field(field_name)
File "C:\django-rest-framework-json-api\venv\lib\site-packages\django\db\models\options.py", line 670, in get_field
raise FieldDoesNotExist(
django.core.exceptions.FieldDoesNotExist: Author has no field named 'type'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "c:\python39\lib\runpy.py", line 197, in run_module_as_main
return run_code(code, main_globals, None,
File "c:\python39\lib\runpy.py", line 87, in run_code
exec(code, run_globals)
File "C:\django-rest-framework-json-api\venv\Scripts\django-admin.exe_main.py", line 7, in
File "C:\django-rest-framework-json-api\venv\lib\site-packages\django\core\management_init.py", line 446, in execute_from_command_line
utility.execute()
File "C:\django-rest-framework-json-api\venv\lib\site-packages\django\core\management_init.py", line 440, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\django-rest-framework-json-api\venv\lib\site-packages\django\core\management\base.py", line 402, in run_from_argv
self.execute(*args, **cmd_options)
File "C:\django-rest-framework-json-api\venv\lib\site-packages\django\core\management\base.py", line 448, in execute
output = self.handle(*args, **options)
File "C:\django-rest-framework-json-api\venv\lib\site-packages\django\core\management\commands\loaddata.py", line 102, in handle
self.loaddata(fixture_labels)
File "C:\django-rest-framework-json-api\venv\lib\site-packages\django\core\management\commands\loaddata.py", line 163, in loaddata
self.load_label(fixture_label)
File "C:\django-rest-framework-json-api\venv\lib\site-packages\django\core\management\commands\loaddata.py", line 251, in load_label
for obj in objects:
File "C:\django-rest-framework-json-api\venv\lib\site-packages\django\core\serializers\json.py", line 74, in Deserializer
raise DeserializationError() from exc
django.core.serializers.base.DeserializationError: Problem installing fixture 'C:\django-rest-framework-json-api\example\fixtures\drf_example.json':
(venv) PS C:\django-rest-framework-json-api>