Failed to read scan data : Argument list too long

[pavan4ind]

Hi

I followed all the installation procedures as mentioned in the following link

https://wifi.readthedocs.io/en/latest/wifi_command.html

After successful installation when i run the following command "wifi scan" i see following error

root@automation01:# wifi scan
Error: wlan0 Failed to read scan data : Argument list too long
root@automation01:#

But some times this command works.

Can you please help me how can i make it work always.