unknown target 'flash_my_light_switch_client_nrf52840_xxAA_s140_6.1.0'

[wangyanjiong163]

Hi Experts,

When trying to flash the mesh demo after did "ninja my_light_switch_client_nrf52840_xxAA_s140_6.1.0" , I met below error:

ninja: error: unknown target 'flash_my_light_switch_client_nrf52840_xxAA_s140_6.1.0'

Any problem here?

BR.
Wang Yanjiong