I met a fault when initial RTC using mcal
BusFault: A precise (synchronous) data access error has occurred.
Possible BusFault location: 0x40288004.
HardFault: A fault has been escalated to a hard fault.

If I run the program directly, everything is OK
but when i run the program from boot, the program crashed in line 475, the fault is above.
the chip is S32K312
can anybody help?