USB Error connecting original pixy to pi

I am getting the following error while trying to connect a original Pixy to a Raspberry Pi 3 b+. Connecting the Pixy to my PC PixyMon works just fine.

I followed the guide here

Any ideas on what maybe wrong?

pi@raspberrypi:~/pixy/build/hello_pixy $ ./hello_pixy
Hello Pixy:
libpixyusb Version: 0.4
pixy_init(): USB Error: Target not found
pi@raspberrypi:~/pixy/build/hello_pixy $ lsusb
Bus 001 Device 006: ID b1ac:f000 **This is the pixy**
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. SMC9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

I think the discourse software may have messed up your code snippet. Could you add three grave “`” symbols on the lines before and after you code?