kmail can not read emails after moving folder in kmail

[sisqonrw]

hi, kmail can not read emails of the moved folder in kmail. what is the problem. i get this error report:

Lokale Ordner: Fehler beim Einlesen des Elements: Der maildir-Ordner „/home/salsero/.local/share/local-mail/.Posteingang.directory/.Business.directory/.sonstige Warengruppen.directory/.Drogerie Produkt…