WDmycloudex4100 not connecting to Mac

All of the sudden my WDmycloudes4100 will no longer connect to by Mac mini. It was connect previously but seems since the last OS update the OS will not connect to the NAS drive. Any ideas or tips to get them connected?

Hello,

You can try to Remap the drive using the instructions given in the following KBA article:
https://support-en.wd.com/app/answers/detail/a_id/10789/