Usually this error means you have an unrepairable USB drive... If it is a name manufacturer, they have repair test software online... or you can try using Windows to defrag then format the drive. If those don't work, it is not worth the time it takes to try to fix it.
If there is valuable data on that flash drive, there are business you can find online that will rescue the data by removing the chip and running a recovery... but that ruins the USB drive so it is a one-time shot.