Ionic1 CFBundleIconName Info.plist missing?

I found already lots of answers regarding the ‘missing CFBundleIconName’ issue, but not how to fix it for ionic projects. That needs to be configured in their config.xml, but how, what and where? It’s an ionic version 1 project. Upgrading to v2 is not an answer nor solution.

Missing Info.plist value - A value for the Info.plist key CFBundleIconName is missing in the bundle ‘’. Apps that provide icons in the asset catalog must also provide this Info.plist key

Did you find a solution to this problem?
How to solve this?
I have the same issue?