Find this file:
Flatpak: ~/.var/app/net.lutris.Lutris/config/lutris/runners/wine.yml
Otherwise: ~/.config/lutris/runners/wine.yml
The file points to a version of Wine that you no longer have installed. Find the section that looks like this:
wine:
version: wine-ge-8-25-x86_64
Update the version listed here to the latest one you actually have installed. You can get the exact name by clicking this button in Lutris:
It should be obvious from the list shown in the window that pops up which Wine versions you have installed, and which versions you're actively using. Get the name of one that's installed and copy it into the wine.yml file; keep the formatting that's already there, with a hyphen between the version and the architecture.
Save the file, restart everything, bam, games galore.