Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32W108/TIM1/TIM1_ISR#0x0
TIM Interrupt Status Register
UIF
CC1IF
CC2IF
CC3IF
CC4IF
TIF
RSVD
https://github.com/cmsis-svd/cmsis-svd-data