LCD Cannot Be Displayed When Running SPRESENSE dnnrt.bigin()

SPRESENSE implements the ability to recognize the hand of rock-paper-scissors by referring to the source code of the net.

Regarding LCD display, the process of displaying the camera image on the LCD in real time works correctly, but the LCD does not work when the source code reads the model generated by the NNC using dnnrt.bigin().I just opened the model, but it was no good.It does not appear to be a symptom that the model does not exist or cannot be opened.

In another question, I saw a post saying that SPRESENSE will not work if the learning model format is wrong. Is that the kind of post?
Also, if so, what kind of learning model is not appropriate?

The LCD uses ILI9341.