<Project InitialTargets="NETStandardCompatError_Microsoft_Extensions_DependencyInjection_netcoreapp3_1"> <Target Name="NETStandardCompatError_Microsoft_Extensions_DependencyInjection_netcoreapp3_1" Condition="'$(SuppressTfmSupportBuildWarnings)' == ''"> <Error Text="Microsoft.Extensions.DependencyInjection doesn't support $(TargetFramework). Consider updating your TargetFramework to netcoreapp3.1 or later." /> </Target> </Project>