I am also getting the same error message.
I put the command airmon-ng start wlan0
PHY Interface Driver Chipset
phy0 wlan0 Image may be NSFW.
Clik here to view.
?? Broadcom 43430
ERROR adding monitor mode interface: command failed: Operation not supported (-95)
I put the command airmon-ng start wlan0
PHY Interface Driver Chipset
phy0 wlan0 Image may be NSFW.
Clik here to view.

ERROR adding monitor mode interface: command failed: Operation not supported (-95)