I depend on my Organizer as a photographer, but have backup Problem [LOCKED]

I am trying to back up my Photoshop Organizer on external hard drive, and 128,000 pictures to transfer to a new PC.  I depend on this as a photographer, it is 17 years work!  It has always worked in the past

When I backup it does 97% and then I get this message - ''C:\Users\ukphotos\Pictures\iCloud Photos\Photos\IMG_4151_edited1.jpg''  ( have changed it a little).  Know nothing about iCloud - and I cannot find 4151 in Organizer or my files.   Can somebody please help.  Can Adobe phone me or contact me?  Am willing to pay for help.

[Duplicate Post: See https://community.adobe.com/t5/photoshop-elements/i-depend-on-this-as-a-photographer-what-does-this-mean-i-am-trying-to-trace-a-picture/m-p/12023165 ]