Попробуйте этот код
from django.contrib import admin
from .models import Person #
from import_export import resources
from import_export.admin import ImportExportModelAdmin
class PersonAdmin(ImportExportModelAdmin): # FOR ADMIN IMPORT EXPORT ONLY
pass
admin.site.register(Person, PersonAdmin) # FOR ADMIN IMPORT EXPORT ONLY
Settings.py
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'import_export',
'app',
]