Mac App Store updates failing on Mojave

from blog The Desolation of Blog, | ↗ original
In its relentless zeal to release major macOS updates every year, Apple is leaving its users behind. Not just behind in their macOS versions but also behind in their app versions installed from the Mac App Store. Many macOS Mojave users, including myself, have experienced frequent failures of App Store to update their installed apps. Whenever this occurs, App Store shows the completely unhelpful error message "cancelled".