When I logged in to the individual site, it was updated. However, that did not fix the network update problem because if I click on network update, I still get the same error message for the same site.
I found that the network is not updating because I have an error message that is showing up at the top of all of my websites. As you indicated, if I go to the dashboard of the subsite it will update and the error message is gone.
This site has an error message at the top of the page because I have not yet logged into its dashboard which will update the plug-in and get rid of the error message:
So, my question is how to fix the problem so that the network update in Multisite works.