RESET PIN cause a HardFault_Handler

[MR.liu]

When I operate RESET PIN in main function like this:NRF_POWER->RESET = 1,Then cause a HardFault_Handler,(/attachment/fabd1141d36157d32f8c0353e4880b3e),What's this？

[MR.liu]

void opt_reset_func(void) { NRF_POWER->RESET = 1; } this is opt_reset_func function implementations