Using Arduino wireless SD Shield to save data to sd card and send to PC over wireless network
"Arduino Wireless SD shield" is not "Arduino WiFi shield".

The code you have is for the Arduino WiFi shield. But you have Arduino Wireless SD shield for a XBee module. XBee is not WiFi. Zigbee protocol is different protocol then WiFi.

You can save data to SD card with the SD library. Install the library in Library Manager and try the examples.

Arduino WiFi shield:

Note: the Arduino WiFi library is only for this shield and clones