Hi ,
I ran the example "zephyr\samples\bluetooth\scan_adv" on the nRF9160 dk kit .
It says the following error
"
2020-07-16T02:22:00.682Z DEBUG modem << ***** Booting Zephyr OS v1.14.99-ncs2 *****
2020-07-16T02:22:00.737Z DEBUG modem << Starting Scanner/Advertiser Demo
2020-07-16T02:22:00.742Z DEBUG modem << Bluetooth init failed (err -19)
2020-07-16T02:22:00.747Z DEBUG modem << [00:00:00.008,117] 1B[1;31m<err> bt_hci_core: No HCI driver registered
"
How to resolve this ? do i need to flash anything else