How to use EfficientNet on ROCK Pi N10

i’ve tried to use EfficientNetB0 for image classification on Rock Pi N10 but the network doesn’t work properly.
I downloaded efficientnet_lite0_int8_2.tflite from TensorFlow Hub:
Then i ran this test i found on rknn-toolkit repository:

using the efficientnet instead of mobilenet.
I also tried to do some changes on the config part of the script and in the preprocessing of the image but none of them worked.
I have:

  • Python 3.7.3
  • rknn-toolkit 1.4.0
    Does anyone know what i did wrong or where i can find an example test for EfficientNet?
    Thank you a lot for the help.