Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32L0x2/USB_FS/EP5R#0x0
endpoint register
EA
STAT_TX
DTOG_TX
CTR_TX
EP_KIND
EPTYPE
SETUP
STAT_RX
DTOG_RX
CTR_RX
https://github.com/cmsis-svd/cmsis-svd-data