First solution:
Perform a license refresh and try again. If the issue persists, proceed to the next step.

Second Solution:

If the license is missing or has expired, contact support by opening a service request. If the license exists and is valid, verify that the Dokka user is assigned to the license, as shown on the "Authorized Users for the Application" screen. If not, assign the license to the user.Third Solution:
Go to System Administrator > System Maintenance > System Users > System Users and search for the user "dokka".
