All versions of .net core 2.1 are worth:

* .csproj:
<Project Sdk="Microsoft.NET.Sdk.Web"> <PropertyGroup> <TargetFramework>netcoreapp2.1</TargetFramework> </PropertyGroup> <ItemGroup> <Folder Include="wwwroot\ProductImages\" /> <Folder Include="wwwroot\" /> </ItemGroup> <ItemGroup> <PackageReference Include="Microsoft.AspNetCore.App" /> <PackageReference Include="Microsoft.AspNetCore.Razor.Design" Version="2.1.2" PrivateAssets="All" /> <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="2.1.4"> <PrivateAssets>all</PrivateAssets> <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets> </PackageReference> <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="2.1.1" /> <PackageReference Include="MySql.Data" Version="8.0.14" /> <PackageReference Include="MySql.Data.EntityFrameworkCore" Version="8.0.14" /> <PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="2.1.4" /> </ItemGroup> </Project>
I publish a website (publication without errors) in the Default folder (it contained a site published 2 days ago, it works); This one does not work (replaced the old one with a new one)
When I try to open, I see:

Common causes of this issue: The application process failed to start The application process started but then stopped The application process started but failed to listen on the configured port Troubleshooting steps: Check the system event log for error messages Enable logging the application process' stdout messages Attach a debugger to the application process and inspect
Why can this happen?