buttonless dfu in sdk 14

[Stas]

After migrating from sdk 13 with buttonless dfu based app I meet follow error: my app get FATAL error after exactly 3min. I guess it something related with power down mode or like that but can't find where is issue. After start app with DEBUG I got these error info:

[Stas]

Could you explain how I disabled the softdevice. Which command can do it?

int main(void)
{
    bool erase_bonds;
		ble_stack_init();	
		uint32_t err_code;
    // Initialize.
    log_init();
		SEGGER_RTT_printf(0, "start app\n\r");
		nrf_gpiote();

		pwm_init_corr();
		pwm_init_rgb();
		HX711_init();
		m_clock_timer_init();
		//timers_init();
    //power_management_init();
    //buttons_leds_init(&erase_bonds);
    peer_manager_init();
    gap_params_init();
    gatt_init();
    advertising_init();
    services_init();
    conn_params_init();
    // Start execution.
   // application_timers_start();
    advertising_start(erase_bonds);