Illegal instruction (core dumped) using tflite on pynq z1

Hello all,
I am trying to run tflite on pynq z1 but I am getting an error "Illegal instruction (core dumped) when I am calling the function interpreter.invoke. I have built the compatible tflite runtime from scratch following the instructions from the official website Build TensorFlow Lite Python Wheel Package
but could not fix this issue.
Anyone got a similar problem?
Thank you in advance