BLE Scanner Assert Error

Hello,

I've been working on a modified version of the ble_multi_link project from the SDK 10.0.4.66.2 with which I would like to add a scanning function to. So far I have set up a notification that is triggered every second by a timer and callback function, and I am able to get the scanner to run, however my code never reaches the BLE_EVT_GAP_ADV_REPORT case that I added to the BLE_APP_NOTIFY_MASK switch case. Instead my scanner will run for a certain amount of time and then my code will freeze after showing ASSERT_ERROR(0). I had tried turning off advertising and also setting the scanner to turn off at various applicable points in the code, however I still receive this error. If anyone has any advice on this matter, I would greatly appreciate it.
Here are some of the additions I made to the code to implement what I have made so far:

__RETAINED static OS_TIMER sc_scan_tim; //added at the top to set up the 1 second timer

static void sc_scan_cb(OS_TIMER timer) // I added this to the section with all of the other predefined functions
{
OS_TASK task = (OS_TASK)OS_TIMER_GET_TIMER_ID(timer);

OS_TASK_NOTIFY(task, SC_SCANNER_MASK, OS_NOTIFY_SET_BITS);
}

/ /代码添加到ble_multi_link_task函数
ble_gap_role_set(
GAP_PERIPHERAL_ROLE | GAP_CENTRAL_ROLE | GAP_OBSERVER_ROLE); // I also set the GAP_OBSERVER_ROLE to 1 in the config file

sc_scan_tim = OS_TIMER_CREATE("SC_SCAN", OS_MS_2_TICKS(1000), true,
(void *) OS_GET_CURRENT_TASK(), sc_scan_cb);

OS_TIMER_START(sc_scan_tim, OS_TIMER_FOREVER);
////////////////////////////////////////////////////////////////

Inside the BLE_APP_NOTIFY_MASK switch case
//////////////////////////////////////////
case BLE_EVT_GAP_ADV_REPORT:
handle_evt_gap_adv_report(
(ble_evt_gap_adv_report_t *)hdr);
break;
//////////////////////////////////////////////////////////
After the switch case but still within the for loop
//////////////////////////////////////////////////////////
if (notif & SC_SCANNER_MASK) {
ble_error_t status;
ble_gap_adv_stop();
status = ble_gap_scan_start(GAP_SCAN_PASSIVE,
GAP_SCAN_OBSERVER_MODE,
BLE_SCAN_INTERVAL_FROM_MS(2.5),
BLE_SCAN_WINDOW_FROM_MS(0.625),
false, false);
if (status != BLE_STATUS_OK) {
printf("ERROR: scan can not be started (0x%02X)\r\n",
status);
}
printf("Scanning...\r\n");

}
////////////////////////////////////////////////////////////////////////////

If there is anything else I can provide to improve the clarity of my issue, please let me know, and I can do so gladly.

Many thanks,

Steven