please install mono and gecko packages then click on OK button

[geniot]

My mono is installed:
sudo apt install mono-complete
mono-complete is already the newest version (6.8.0.105+dfsg-3.6ubuntu2)

I've just installed gecko:
2026-02-18 12:46:27 (8,44 MB/s) - ‘wine-gecko-2.47.2-x86_64.tar.xz’ saved [43025348/43025348]
sudo mkdir -p /usr/share/wine/gecko
sudo tar xf wine-gecko-2.47.2-x86_64.tar.xz -C /usr/share/wine/gecko
wineboot -u

But I'm still getting this error. Any idea how to fix this?

[wilmer2000]

Probably you need to pay attention in which version to use, I installed using the steps on this page: https://wine.htmlvalidator.com/Mono-Gecko-ManualInstallation.html