Can not find UFS after several reboot

Hi,

    Our product is using R-car S4 and whitebox 5.x SDK.

    We have an issue is that we get into system and type command "reboot -f".

    It will not find UFS after reboot several times.(Spider board won't happen)

    The log and the script which we run on teraterm are attached on ticket number;385043.

     Can you help us to analyze the poll failed?

     Thanks!

Best Regards,

Johnny