Deinitialize BLE Not working: Failed with error: 259

[chinswain]

Any idea on this one? I need to switch to WiFi periodically to transmit the data back but can't deinit.
If I call NimBLEDevice::deinit(true); after clearing the scan results I get:

E NimBLEDevice: esp_nimble_hci_and_controller_deinit() failed with error: 259

#include "ATC_MiThermometer.h"

const int scanTime = 5;  // BLE scan time in seconds

// List of known sensors' BLE addresses
std::vector<std::string> knownBLEAddresses = { "A4:C1:38:C5:3E:18" };

ATC_MiThermometer miThermometer(knownBLEAddresses);

void setup() {
  Serial.begin(115200);

  // Initialization
  miThermometer.begin();

}

void loop() {
  miThermometer.begin();

  // Set sensor data invalid
  miThermometer.resetData();

  // Get sensor data - run BLE scan for <scanTime>
  unsigned found = miThermometer.getData(scanTime);

  for (int i = 0; i < miThermometer.data.size(); i++) {
    if (miThermometer.data[i].valid) {
      Serial.println();
      Serial.printf("Sensor %d: %s\n", i, knownBLEAddresses[i].c_str());
      Serial.printf("Name: %s\n", miThermometer.data[i].name.c_str());
      Serial.printf("%.2f°C\n", miThermometer.data[i].temperature / 100.0);
      Serial.printf("%.2f%%\n", miThermometer.data[i].humidity / 100.0);
      Serial.printf("%.3fV\n", miThermometer.data[i].batt_voltage / 1000.0);
      Serial.printf("%d%%\n", miThermometer.data[i].batt_level);
      Serial.printf("%ddBm\n", miThermometer.data[i].rssi);
      Serial.printf("Measurement Count: %d\n", miThermometer.data[i].count);
      // Print boolean flags
      Serial.printf("Reed Switch State: %s\n", miThermometer.data[i].reedSwitchState ? "Open" : "Closed");
      Serial.printf("GPIO TRG Output: %s\n", miThermometer.data[i].gpioTrgOutput ? "High" : "Low");
      Serial.printf("Control Parameters: %s\n", miThermometer.data[i].controlParameters ? "Set" : "Not Set");
      Serial.printf("Temperature Trigger Event: %s\n", miThermometer.data[i].tempTriggerEvent ? "Triggered" : "Not Triggered");
      Serial.printf("Humidity Trigger Event: %s\n", miThermometer.data[i].humiTriggerEvent ? "Triggered" : "Not Triggered");
      Serial.println();
    }
  }
  Serial.println("BLE Devices found (total): " + String(found));

  // Delete results from BLEScan buffer to release memory
  miThermometer.clearScanResults();

  delay(5000);
  NimBLEDevice::deinit(true);
}