Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Scaffold Identity in "dotnet new Angular" app gives error: "error running the selected code generator"

See original GitHub issue

Describe the bug

Scaffold Identity in a new app, created with “dotnet new angular --auth Individual”, immediately throws an error:

"There was an error running the selected code generator:
'Package restore failed. Rolling back package changes for `'aspangauth'.'

To Reproduce

Run: “dotnet new angular --auth Individual”
Open the project in Visual Studio 2019 ( I am using Version 16.9.0 Preview 2.0)
Select: Add -> New Scaffolded Item
Choose “Identity”
Either leave the “Existing layout page” box blank or enter: ~/Pages/Shared/_Layout.cshtml

(Unlike an app created with “dotnet new webapp --auth Individual”, the new SPA app does not have a _Layout.cshtml file. What should be entered here?)

Choose some files to override. (I chose Account\Login, Account\Logout, Account\Register and Account\RegisterConfirmation. I also tried just choosing Account\Login.)
Set the Data context class to ApplicationDbContext.
Select “Add”. You should immediately get the error.

Scaffold Identity works fine for me if I create an app with “dotnet new webapp --auth Individual”. On stackoverflow, it was suggested to change the version of “Microsoft.VisualStudio.Web.CodeGeneration.Design”. I tried changing from 5.0.1 to 5.0.0 and also 3.1.1. All gave the same error.

Is there an alternate way to scaffold these files?

Besides using the VS user interface, is there a manual way of overriding the files that are needed? Can I just copy files from the ones I get when I scaffold a webapp instead of an angular app?

The document “Scaffold Identity in ASP.NET Core projects” does not contain instructions for a Asp.Net SPA project.

Exceptions (if any)

Popup box with error:

"There was an error running the selected code generator:
'Package restore failed. Rolling back package changes for `'aspangauth'.'

Further technical details

Output of dotnet --info

.NET SDK (reflecting any global.json): Version: 5.0.200-preview.20601.7 Commit: b3b934bbf2

Runtime Environment: OS Name: Windows OS Version: 10.0.19041 OS Platform: Windows RID: win10-x64 Base Path: C:\Program Files\dotnet\sdk\5.0.200-preview.20601.7\

Host (useful for support): Version: 5.0.0 Commit: cf258a14b7

.NET SDKs installed: 1.0.0-preview2-003131 [C:\Program Files\dotnet\sdk] 1.0.3 [C:\Program Files\dotnet\sdk] 1.0.4 [C:\Program Files\dotnet\sdk] 2.0.0 [C:\Program Files\dotnet\sdk] 2.0.2 [C:\Program Files\dotnet\sdk] 2.0.3 [C:\Program Files\dotnet\sdk] 2.1.1-preview-007118 [C:\Program Files\dotnet\sdk] 2.1.2 [C:\Program Files\dotnet\sdk] 2.1.4 [C:\Program Files\dotnet\sdk] 2.1.103 [C:\Program Files\dotnet\sdk] 2.1.104 [C:\Program Files\dotnet\sdk] 2.1.200-preview-007474 [C:\Program Files\dotnet\sdk] 2.1.200 [C:\Program Files\dotnet\sdk] 2.1.201 [C:\Program Files\dotnet\sdk] 2.1.202 [C:\Program Files\dotnet\sdk] 2.1.300 [C:\Program Files\dotnet\sdk] 2.1.400 [C:\Program Files\dotnet\sdk] 2.1.502 [C:\Program Files\dotnet\sdk] 2.1.504 [C:\Program Files\dotnet\sdk] 2.1.505 [C:\Program Files\dotnet\sdk] 2.1.507 [C:\Program Files\dotnet\sdk] 2.1.508 [C:\Program Files\dotnet\sdk] 2.1.515 [C:\Program Files\dotnet\sdk] 2.1.800-preview-009696 [C:\Program Files\dotnet\sdk] 2.2.105 [C:\Program Files\dotnet\sdk] 2.2.109 [C:\Program Files\dotnet\sdk] 2.2.207 [C:\Program Files\dotnet\sdk] 3.0.103 [C:\Program Files\dotnet\sdk] 3.1.402 [C:\Program Files\dotnet\sdk] 5.0.200-preview.20601.7 [C:\Program Files\dotnet\sdk]

.NET runtimes installed: Microsoft.AspNetCore.All 2.1.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.1.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.1.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.1.11 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.1.12 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.1.19 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.1.22 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.1.23 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.2.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.2.7 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.App 2.1.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.1.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.1.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.1.11 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.1.12 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.1.19 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.1.22 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.1.23 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.2.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.2.7 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.0.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 5.0.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.NETCore.App 1.0.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 1.0.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 1.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 1.1.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 1.1.2 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.0.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.0.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.0.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.0.7 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.0.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.2 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.11 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.12 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.19 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.22 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.23 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.2.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.2.7 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 3.0.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 5.0.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.WindowsDesktop.App 3.0.3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] Microsoft.WindowsDesktop.App 3.1.8 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] Microsoft.WindowsDesktop.App 3.1.9 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] Microsoft.WindowsDesktop.App 5.0.0 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

The IDE (VS / VS Code/ VS4Mac) you’re running on, and its version

Issue Analytics

State:
Created 3 years ago
Reactions:4
Comments:15 (2 by maintainers)

Top GitHub Comments

1reaction

deepchoudherycommented, Jul 9, 2021

Hey, I’ll have updates for the issue here very soon - https://github.com/dotnet/Scaffolding/issues/1555. Pretty much the same issue. @claybrooks @maxima120.

Thanks.

1reaction

johnpankowiczcommented, Apr 23, 2021

@wildough57 That does not work for me. I tried:

Just typing a new name for “Data context class” - “Add” button still not active
Clicking “+” to right of “Data context class” box (which goes to “Add Data Context” dialog) and then:
- accepting the name it prompts with. - “Add” becomes active, but it shows same error message, “There was an error running …”
- Entering a new name. - “Add” becomes active, but It shows same error message, “There was an error running …”

Are you using "“dotnet new angular --auth Individual” to create the project? Because, as I say in the post, “dotnet new webapp --auth Individual” works fine.