Time Machine back up failing
Time Machine backup fails on a daily basis, but does complete backups intermittently: I see these errors: " error occurred creating backup folder" also unable to find backup device. Using a WD 4 TB My Passport drive. MAC OS is Mojave 10.14.4. My iMac is new latest model. I have turned off the sleep mode on the WD. I have changed usb cables. Not sure if this is a drive issue or Mac software. Appreciate suggestions
iMac 27", macOS 10.14