Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32W108/FLASH/FLASH_CR#0x0
FLASH control register
PG
PER
MER
OPTPG
OPTER
STRT
LOCK
OPTWRE
ERRIE
EOPIE
https://github.com/cmsis-svd/cmsis-svd-data