what version of VS are you running? 2019 is best, and upgrade it to latest version (release, not preview)
I think it is actually doing something new ...
I got this warning instead of 598 errors ...
The difference I did was gave IUSR permissions to the "src" folder.
So far, the Output window has this ...
1>------ Build started: Project: Nop.Core, Configuration: Release Any CPU ------
1>C:\Program Files\dotnet\sdk\3.0.100\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.DefaultItems.targets(187,5): warning NETSDK1071: A PackageReference to 'Microsoft.AspNetCore.App' specified a Version of `2.2.5`. Specifying the version of this package is not recommended. For more information, see https://aka.ms/sdkimplicitrefs
1>Nop.Core -> C:\Users\Cricket\Desktop\src\Libraries\Nop.Core\bin\Release\netcoreapp2.2\Nop.Core.dll
1>Done building project "Nop.Core.csproj".
2>------ Build started: Project: Nop.Data, Configuration: Release Any CPU ------
2>Nop.Data -> C:\Users\Cricket\Desktop\src\Libraries\Nop.Data\bin\Release\netcoreapp2.2\Nop.Data.dll
3>------ Build started: Project: Nop.Services, Configuration: Release Any CPU ------
3>Nop.Services -> C:\Users\Cricket\Desktop\src\Libraries\Nop.Services\bin\Release\netcoreapp2.2\Nop.Services.dll
4>------ Build started: Project: Nop.Web.Framework, Configuration: Release Any CPU ------
It's looking a lot better than it did before. :)
RE: ....gave IUSR permissions to the "src" folder.
I'm not sure if it's related, but I've found that you have to Unblock the .rar file (or any .zip file for downloaded plugins) before you unpack/unzip them.
OK. OK. I finally got it to render!
First, I had not installed the .NET Core 2.2 runtime.
Second, I set the IUSR permissions on the "src" folder.
Third, I deleted the duplicate plugins using Windows Explorer in the "src" folder tree.
Fourth, I did a Clean and then a Rebuild for the nopCommerce solution.
Fifth, maybe fifth, I changed my default browser from Mozilla Firefox to Microsoft Edge. I'm not really sure if that was a deal-breaker or not.
I am currently running in Debug mode. I really don't know what to expect. I am from the old day of just Classic ASP, so me using Visual Studio at all is like rolling the boulder from the entrance of the cave where I've been residing for well over a decade.
I'll y'all on more when I know more. :)
Now, on to other things on my checklist!
Really cool product! Thank you Team nopCommerce!!