Step-1.
After successfully running the server, Initially you can see Admin-initialization-key in the console like below.

Step-2.
Copy the key and go to the admin dashboard http://localhost:4444 and enter the code click the button Initialize the server

Step-3.
Enter the super admin details create a new Super-Admin.

Step-4.
Login with the credentials that provided.

Step-5.
Congratulations! now you have successfully finished the initialization process.