Dear community,
I am new in this forum so I hope I am not in the wrong discussion group.
I just started some MOOC about Arduino and to achieve my projects, I am using 2 different ESP32. One is NodeMCU-ESP32s and the other one is Adafruit HUZZAH32.
I followed the process explained on the different session by installing the software, in the URL adding "https://dl.espressif.com/dl/package_esp32_index.json" and also download in the tools the ESP32 library from espressif system (version 1.0.2).
The issue I am facing now is that in the port for both devices, I have no USBtoUART appearing as it should. So I can not upload my program in the ESP32.
I tried all the card type: ESP32 Dev module, NodeMCU-32S and Adafruit ESP32 feather.
I have searched a long time on internet, installing some espressif packages, installing some CP2102, CP2104 VCP driver from Silabs and other website.
I rebooted computer, uninstall and reinstall arduino.app,...
I almost tried everything without success 
Does anyone faced the same issue ? if yes, how did you solve this issue ?
I am working on a MacBook Pro Mojave (10.14.3)
Thanks all in advance for your help and support,
thank you,
Coco