Nikon Z8 User Manual page 424

Ending the Connection to the FTP Server
You can end the connection by:
turning the camera off, or
selecting [End current connection] for [Connect to FTP server] > [Network settings] in the
network menu.
D
Access-Point Mode
An error will occur if the FTP server's wireless connection is disabled before the camera's. Disable
camera's connection first.
350
FTP Servers: Connecting via Wireless LAN