في class غرض تدوينه واحده لم لقوم لتوقيف الداله الاساسيه لماذا ؟ ثانيا انا يظهر عندي هذا الخطاء

AttributeError at /about/3

Generic detail view ArticleDetailView must be called with either an object pk or a slug in the URLconf.

Request Method:GET

Request URL:http://127.0.0.1:8000/about/3

Django Version:5.0.3

Exception Type:AttributeError

Exception Value:

Generic detail view ArticleDetailView must be called with either an object pk or a slug in the URLconf.

Exception Location:C:\Users\Elkhour\.virtualenvs\mahmoud-zB2L3BS-\Lib\site-packages\django\views\generic\detail.py, line 46, in get_object

Raised during:sara.views.ArticleDetailView

Python Executable:C:\Users\Elkhour\.virtualenvs\mahmoud-zB2L3BS-\Scripts\python.exe

Python Version:3.12.0

Python Path:

['F:\\Django\\mahmoud', 'C:\\Users\\Elkhour\\AppData\\Local\\Programs\\Python\\Python312\\python312.zip', 'C:\\Users\\Elkhour\\AppData\\Local\\Programs\\Python\\Python312\\DLLs', 'C:\\Users\\Elkhour\\AppData\\Local\\Programs\\Python\\Python312\\Lib', 'C:\\Users\\Elkhour\\AppData\\Local\\Programs\\Python\\Python312', 'C:\\Users\\Elkhour\\.virtualenvs\\mahmoud-zB2L3BS-', 'C:\\Users\\Elkhour\\.virtualenvs\\mahmoud-zB2L3BS-\\Lib\\site-packages']

Server time:Mon, 25 Mar 2024 21:08:18 +0000