Step 1: 
Open the Assignment Auto-Grader Tool

Step 2:
Open the Developers tool of your Browser

Step 3:
Reload the Auto-Grader Page again

Step 4:
Go to the Networks Tab on the Developers Tool Tab

Step 5:
Double Click on the Cookie named "?PHPSESSID=...."

Step 6:
In the "Headers" Tab, search for the title "Request Headers" and inside that; search for "cookie" property.
That will be your Cookie Value

Step 7:
Click on the "Cookies Tab inside the same filename "?PHPSESSID=..."

Step 8:
Copy the 'Value' of the "wa4e_secret_cookie" .
That will be your Session ID.