Stacks is not showing in the View menu of the Finder
I have been using Stacks on my MacPro running Mohave 10.14.6.
I recently upgraded my wife's iMac to Mohave also, however when I went to show her Stacks so that she could use it, it was not showing up in the View menu of Finder.
To further confuse me, I just checked on my MacPro as I was writing this and could not find it either in the Finder's, View menu. My stacks appear to be still working on my desktop.
Any suggestions would be appreciated.
Thank you.
iMac 27″, macOS 10.13