My 2TB g drive is not mounting

hi
i have 2TB g-drive external hard drive on my MacBook Pro and i was using with no problem, Today it is not showing on my laptop and i cant navigate to it.
i tried to verify or repair but it fails and it says not mounted but it is showing on the disk utilities.
when i am doing verify it gives a message “File system check exit code is 8” i dont know what is wrong.
please help

The partition on the drive is corrupted.

Did you leave the drive as is out of the box or did you format it at some point to exFAT?

If you left it as is then you can clean the corruption by erasing the drive. It will erase all content but will allow the drive to mount and be usable again. If you need the data then you would need to use a repair software that is more powerful than the Disk Utility First Aid. Our recommendation for that would be Disk Warrior.