Local files are deleted, lokale Dateien werden gelöscht

Hello, I have the latest version of owncloud, when I now sync my folders, it deletes all local files in the folder on my PC, what am I doing wrong?
Hallo, ich habe die neueste Version von own cloud, wenn ich nun meine Ordner synchronisiere, löscht es mir alle lokalen Dateien in den Ordner auf meinem PC, was mache ich falsch?

Gruß Silvia

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