The original part of 'TimeMachineBackup' can not be found

On my Macbook I made with TimeMachine a backup. If I select in Finder WdMycloud and further the folder TimeMAchinebackup the notification appears that the original part of TimeMachineBackup can not be foud. What is wrong?

Hi disk1,

Maybe you should try contacting WD’s Technical Support about this.

To Contact WD for Technical Support
The link below will allow you to call support.