Specify upload port on mac high sierra

I just upgraded platformio and since, when I try to upload my code to the device (esp32 wemos lolin32) the console says:
CURRENT: upload_protocol = esptool
Looking for upload port…
Error: Please specify upload_port for environment or use global --upload-port option.
For some development platforms it can be a USB flash drive (i.e. /media//)

I don’t know how to find which port is the usb I connect to my board.
Why is this happening?
Can anyone help me find the name of the usb port?

Thank you