hi
How to solve this problem
The purpose of running on the version 4.3
1>------ Build started: Project: App1.Android, Configuration: Debug Any CPU ------
1>C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(819,2): warning XA0113: Google Play requires that new applications and updates must use a TargetFrameworkVersion of v8.0 (API level 26) or above. You are currently targeting v4.4 (API level 19).
1>C:\Users\Mohammad.nuget\packages\xamarin.forms\4.5.0.617\buildTransitive\Xamarin.Forms.targets(183,5): error XF005: The $(TargetFrameworkVersion) for App1.Android (v4.4) is less than the minimum required $(TargetFrameworkVersion) for Xamarin.Forms (9.0). You need to increase the $(TargetFrameworkVersion) for App1.Android.
========== Build: 0 succeeded, 1 failed, 1 up-to-date, 0 skipped ==========
========== Deploy: 0 succeeded, 0 failed, 0 skipped ==========