Hi.
Indeed, I am using tflite-maker 2.5.0 on Raspberry OS Buster, but when I try to upgrade, it is not possible (apparently there is no installer for this version).
If I use Raspberry OS Bullseye it is possible to install tflite-maker 2.7.0, but in this distribution the OS does not recognize the camera. I have already done the relevant steps for its configuration, but it is still not recognized.
Based on your comments, I opted to try converting the model using tflite-maker version 0.3.1, instead of version 0.3.4 which is installed by default. To do so, I modify the original line of the Object Detection with TensorFlow Lite Model Maker example (Object Detection with TensorFlow Lite Model Maker 1)
!pip install -q --use-deprecated=legacy-resolver tflite-model-maker
Adding the version I want to install (0.3.1)
!pip install -q --use-deprecated=legacy-resolver tflite-model-maker==0.3.1
Once trained and exported the model with this version, the model runs correctly (on the Raspberry OS Buster)