When i try crack WPS i got stuck on Sending identify response .

[+] Waiting for beacon from 64:68:0C:59:2C:9A
[+] Switching mon0 to channel 3
[+] Associated with 64:68:0C:59:2C:9A (ESSID: WLAN_23)
[+] Trying pin 12345670
[+] Sending EAPOL START request
[+] Received identity request
[+] Sending identity response

how fix it ?