.NET Core 版本：
1、error : Assembly 'D:\SoundCode\CCFlowForNetcore\Components\BP.WF\bin\Debug\netcoreapp3.1\BP.WF.NetCore.dll' does not contain an entry point.

2、error MSB3073: 命令“dotnet "C:\Users\DELL.nuget\packages\microsoft.extensions.apidescription.server\5.0.5\build/../tools/dotnet-getdocument.dll" --assembly "D:\SoundCode\CCFlowForNetcore\Components\BP.WF\bin\Debug\netcoreapp3.1\BP.WF.NetCore.dll" --file-list "obj\BP.WF.NetCore.OpenApiFiles.cache" --framework ".NETCoreApp,Version=v3.1" --output "obj" --project "BP.WF.NetCore" --assets-file "D:\SoundCode\CCFlowForNetcore\Components\BP.WF\obj\project.assets.json" --platform "AnyCPU" ”已退出，代码为 3。