Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32L0x2/USB_FS/ISTR#0x0
interrupt status register
EP_ID
DIR
L1REQ
ESOF
SOF
RESET
SUSP
WKUP
ERR
PMAOVR
CTR
https://github.com/cmsis-svd/cmsis-svd-data