How to fix “containing working copy admin area is missing” in SVN?

Question

I deleted manually a directory I just added, offline, in my repository. I can\'t restore the directory.

Any attempt to do an update or a commit will fail with:

Answer 1

I added a directory to svn, then I accidentally deleted the .svn folder within.

I used

svn delete --keep-local folderName

to fix my problem.