Can not create bridged Wifi hotspot

[edgean]

Describe the bug
Laptop with Ethernet and Wifi interface, establish nat wifi spot using default configure is successful, but when I want to create bridge wifi hotspot through the command:

root@thinkpad:/etc# create_ap -m bridge wlp3s0 enp0s31f6 amdc2 20241212
Config dir: /tmp/create_ap.wlp3s0.conf.UJ3BWNAf
PID: 70025
Network Manager found, set ap0 as unmanaged device... DONE
Creating a virtual WiFi interface... ap0 created.
Sharing Internet using method: bridge
Create a bridge interface... Error: Nexthop has invalid gateway.

Doing cleanup.. done
root@thinkpad:/etc# cat /tmp/create_ap.wlp3s0.conf.UJ3BWNAf
cat: /tmp/create_ap.wlp3s0.conf.UJ3BWNAf: No such file or directory
root@thinkpad:/etc# create_ap -m bridge wlp3s0 amdc2 20241212
ERROR: 'amdc2' is not an interface
root@thinkpad:/etc# create_ap -m bridge wlp3s0 enp0s31f6 amdc2 20241212
Config dir: /tmp/create_ap.wlp3s0.conf.T0qXrmq6
PID: 107737
Network Manager found, set ap0 as unmanaged device... DONE
Creating a virtual WiFi interface... ap0 created.
Sharing Internet using method: bridge
Create a bridge interface... Error: Nexthop has invalid gateway.

Doing cleanup.. done
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Desktop (please complete the following information):

• OS: [e.g. Ubuntu]
• Version [e.g. 18.04]

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