Not sure it's strickly related to FW upgrade to Merlin 384.18 on a RT-AC66U B1, but since yesterday, from the first reboot I did after Fw update, I see this error on pyLoad Log:
927 05.07.2020 13:32:34 INFO Avvio pyLoad 0.4.20
931 05.07.2020 13:32:39 INFO Tempo di download: True
932 05.07.2020...