Using: Visual Studio for Mac 17.5 Preview (17.5 build 1701)
Something happened during the upgrade in the preview channel so that Android manifest couldn’t find the appicons provided.
resource mipmap/appicon (aka com.companyname.myapp.maui:mipmap/appicon) not found.
The solution was to copy the appicons to he Platforms/Android/mipmap and change the build action to AndroidResource
Center.is - Upplýsingatækniráðgjöf og Hugbúnaðarþróun 