This article works through the steps to update dependencies in the composer.json file to the latest version. Use composer outdated to suggest the latest versions. composer outdatedWhereas, to return a complete list of packages where packages that need an update are coloured red, the up-to-date ones are coloured green composer show -l  Steps from above with responses Updating packages to a version supported by the constraints use: composer updateWhereas, if you want to update...

Android Studio error error: package android.support.v4.content does not existThis is a problem with plugins using old Android support dependencies instead of the AndroidX equivalent.  As it's a dependency issue, to resolve add jetifier.  I know yet another package... npm install jetifier npx jetify npx cap sync  Tools Ionic CLI : 6.20.1 (/usr/local/lib/node_modules/@ionic/cli) Ionic Framework : @ionic/angular 6.2.0 ...