(MAC) dash_repl_basic USB Serial not working

I got to the part of the tutorial where we use “dash_repl_basic.ino” to get data through Serial,
but it just won’t work, if I write “help” and send, it just display Help.

So I decided to give it a chance with Arduino web editor and it worked,
I can access the Serial monitoring,

what could be the problem?

MacOS Sierra - 10.12.6
Arduino - 1.8.5
Hologram - 0.11.1



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