Nikon Z 9 Reference Manual page 398

Problem
The camera displays a
"no memory card"
error.
Upload is interrupted
and fails to resume.
The connection is
unreliable.
Troubleshooting Wireless LAN and Ethernet Connections
398
The memory card is inserted incorrectly or not at all.
Check that card is inserted correctly ( 0 81).
Upload will resume if the camera is turned off and
then on again ( 0 359).
If the camera is connected in infrastructure mode,
check that the router is set to a channel between 1
and 8 ( 0 760, 765).
Solution