J-link CDC serial port driver problem
Well it sounds like your J-Link Lite-XMC4000 does not support the virtual COM port. You could buy a new JLink with Hardware version >9 which supports a virtual COM port, but I think the better variant would be to buy a standard USB to Serial (TTL level) adapter and attach that to your board.

Why do I say that? You can use that cable for all other projects and things running without a JLink attached to it as well. The drawback is of course that you have to program the UART peripheral which you might not need for the virtual COM port (I'm not sure on that part).