It looks like the USBridge is not enabled in DietPi.
Take a look at the thread linked below. It’s about the Allo DigiOne rather than the USBridge, but I’m guessing the problem and solution(s) are the same:
It looks like the USBridge is not enabled in DietPi.
Take a look at the thread linked below. It’s about the Allo DigiOne rather than the USBridge, but I’m guessing the problem and solution(s) are the same: