You are missing the usb passtrough. I suggest you to start again with a clean template without deleting this:
Also, I see in the config file that you are trying to use a yolo model with the coral and that is not posible. As you can read in the docs, the best option is to use the default model that is just fine, so you should comment or delete this part:
model:
path: /config/model_cache/tensorrt/yolov7-320.trt
input_tensor: nchw
input_pixel_format: rgb
width: 320
height: 320
Yolo models are great for nvidia or openvino detectors, but the coral is a different chip that has its own requirements to create a model. If you want to use another custom modelwith the coral, it must be a tflite model. You can find here most of the pretrained models.