Hi A-Jay,
The first one, you need to disable the PLL dividers.

There are two errors of CMU_FC_11 and CMU_FC_54 are "under control".
To fix those errors, you need to disable "under control" on CMU_FC_11 and CMU_FC_54 (double click on PERIPH PLL PHI0 clock and select as image below:

The next one, you need disable them in the Mcu configuration by clicks:


Best regards,
Dan