"Your repository is locked. Contact the repository's owner." "[Collab] Archiving is currently in..."

I have a project. Whenever I try to publish it using Unity’s Collaborate service, I recieve the following two messages, one in the Collab window and the other in the Console.

“Your repository is locked. Contact the repository’s owner.”

“[Collab] Archiving is currently in progress.”

This problem has persisted for more than a week. I’m lost as to what is the cause. Does anyone have a solution?

Probably best to post in the Collab forum https://forum.unity.com/forums/unity-collaborate.98/