Python on Mac Sonoma 14.6.1 trouble with Notify

[julio-liriano]

Hi!
I am having some trouble getting "peripheral.notify" working for my setup. I have a "notify" characteristic running on an ESP32C3 board. When I use an nRF dongle, through nRF Connect, I am able to subscribe to it and get periodic updates from that characteristic.

When I try to do the same in Python on my Mac using simplepyble, I get the following error:
Operation Failed: Characteristic C2022573-7B02-47F4-B9DA-4F4129509FBD Notify/Indicate failed: The attribute could not be found.

Here is the snippet:
print("Connecting to device...")
foundDev.connect()
time.sleep(1.0)

    for service in foundDev.services():
        print(f"    Service UUID: {service.uuid()}")
        print(f"    Service data: {service.data()}")

        for c in service.characteristics():
            print(f"        Characteristic UUID: {c.uuid()}")
            print(f"        Characteristic Capabilities: {c.capabilities()}")
    
            # enable notify
            print(f"Start Notify on service: {service.uuid()} characteristic: {c.uuid()}")
            try:
                contents = foundDev.notify(service.uuid(), c.uuid(), lambda data: print(f"Received data: {data}"))
                time.sleep(5.0)
                foundDev.unsubscribe(service.uuid(), c.uuid())
            except Exception as e:
                print(f"Failed to start notify: {e}")

    foundDev.disconnect()