"Unknown Storage : 15" when recording a Voicetrack

I accidently deleted the ‘storage’ folder of my voicetracks in MairlistDB → Administration → Configuration → Storages. (Storage ID : 15)

I just re-created the folder again (same name, same directory) but when I record a voicetrack now , I clicked on SAVE → (destination folder : Voicetracks) → “Import” , there is an error (see screenshot).

When I verify the ID number in MairlistDB → Administration → Configuration → Storages.
The Storage ID for my voicetrack is now 29