This is probably a duplicate of bug 1786822 You could try installing an updated version of Mono from https://www.mono-project.com/download/stable/#download-lin, or using the Snap / Flatpak packages
This is probably a duplicate of bug 1786822 /www.mono- project. com/download/ stable/ #download- lin, or using the Snap / Flatpak packages
You could try installing an updated version of Mono from https:/