Hello 260068845@qq.com,
For the first error message you should simply switch off and on the SW5 and then press the ok button.
For the second message, you could try adding the -uncensorpassword=n as it says and see what's happening but the processor might be gone.
You can also try creating a clean project in S32DS for MPC5748G and flash it using either the OpenSDA or an external JTAG to the board.
If any of the proposed suggestions work you can try using the Rappid bootloader to upload the code over the Serial.
Hope this helps,
Marius