So I've been running into this annoying problem :
Writing login information to the keychain failed with error 'GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.secrets was not provided by any .service files'."
I'm running KDE on Manjaro. The fix was painfully simple, install Gnomekeyring
Projects/GnomeKeyring - GNOME Wiki!