Authorship of application was lost after clone, and you can no longer publish application to your Repository.
A restore from backup is the quickest and safest method to restore authorship to the application. In some cases, Customer Support is able to restore Authorship for you, however there are risks involved. The most optimal option is a restore from backup to when the application had authorship. Engage Customer Support if further assistance is needed.
To prevent this in the future, refer to the following Docs page: https://docs.servicenow.com/bundle/jakarta-application-development/page/build/applications/task/preserve-applications-during-clone.html