Didn't find op for builtin opcode 'CONV_2D' version '3'. An older version of this builtin might be supported. Are you using an old TFLite binary with a newer model?

[rishita-asl]

I am trying to run the Mini speech commands example and am facing the error Didn't find op for builtin opcode 'CONV_2D' version '3'. An older version of this builtin might be supported. Are you using an old TFLite binary with a newer model? at setup() and then error tflite micro requested feature data size 536907080 doesn't match 1960 in loop().

I trained my model following the example : https://colab.research.google.com/github/tensorflow/tflite-micro/blob/main/tensorflow/lite/micro/examples/micro_speech/train/train_micro_speech_model.ipynb#scrollTo=rNQdAplJV1fz with the only change of WANTED_WORDS = "on,off,stop,go"

TFLite micro example: only changed the g_model[] with the model generated after training using the above notebook, and the kCategoryLabels values as "on, off, stop, go"

Tensorflow version : 2.15.0 Board: Arduino BLE sense Nano