Samba Share is not showing files in MAC

I had installed samba server on my Raspberry Pi and was able to access a USB hard drive (connect to Raspberry Pi) from my MAC successfully.
But since yesterday although I can connect to the samba share (using osmc/osmc as user/password) but I don’t see any files in the drive. All folders are empty.

I am able to access the samba share from a Windows PC alright.

Any help??