Hello xflongzhang,
I got your error. I saw that this interrupt is PIT_0_ISR after I check the below registers.
nxf78987_0-1660198846323.png
I didn't why the PIT_0_ISR function didn't install after calling the Platform_Init(NULL_PTR); in the main_core0() function.
I have a solution: you can add the statement calling Platform_InstallIrqHandler function as the below image. After that, rebuild and test again.
nxf78987_1-1660199364540.png
Best regards,
Dan