.NET CLI Template missing namespace

[ibebbs]

** Description **
A new project created using the HotChocolate.Templates.Server does not build

To Reproduce

mkdir HotChocolateTemplateIssue
cd .\HotChocolateTemplateIssue\
dotnet new graphql -n HotChocolateTemplateIssue
cd .\HotChocolateTemplateIssue\
dotnet build

Produces

Microsoft (R) Build Engine version 16.4.0+e901037fe for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

  Restore completed in 477.31 ms for D:\Source\Scratch\HotChocolateTemplateIssue\HotChocolateTemplateIssue\HotChocolateTemplateIssue.csproj.
Startup.cs(22,22): error CS1061: 'IServiceCollection' does not contain a definition for 'AddDataLoaderRegistry' and no accessible extension method 'AddDataLoaderRegistry' accepting a first argument of type 'IServiceCollection' could be found (are you missing a using directive or an assembly reference?) [D:\Source\Scratch\HotChocolateTemplateIssue\HotChocolateTemplateIssue\HotChocolateTemplateIssue.csproj]
Startup.cs(25,33): error CS0103: The name 'SchemaBuilder' does not exist in the current context [D:\Source\Scratch\HotChocolateTemplateIssue\HotChocolateTemplateIssue\HotChocolateTemplateIssue.csproj]
Startup.cs(25,22): error CS1061: 'IServiceCollection' does not contain a definition for 'AddGraphQL' and no accessible extension method 'AddGraphQL' accepting a first argument of type 'IServiceCollection' could be found (are you missing a using directive or an assembly reference?) [D:\Source\Scratch\HotChocolateTemplateIssue\HotChocolateTemplateIssue\HotChocolateTemplateIssue.csproj]

Build FAILED.

Startup.cs(22,22): error CS1061: 'IServiceCollection' does not contain a definition for 'AddDataLoaderRegistry' and no accessible extension method 'AddDataLoaderRegistry' accepting a first argument of type 'IServiceCollection' could be found (are you missing a using directive or an assembly reference?) [D:\Source\Scratch\HotChocolateTemplateIssue\HotChocolateTemplateIssue\HotChocolateTemplateIssue.csproj]
Startup.cs(25,33): error CS0103: The name 'SchemaBuilder' does not exist in the current context [D:\Source\Scratch\HotChocolateTemplateIssue\HotChocolateTemplateIssue\HotChocolateTemplateIssue.csproj]
Startup.cs(25,22): error CS1061: 'IServiceCollection' does not contain a definition for 'AddGraphQL' and no accessible extension method 'AddGraphQL' accepting a first argument of type 'IServiceCollection' could be found (are you missing a using directive or an assembly reference?) [D:\Source\Scratch\HotChocolateTemplateIssue\HotChocolateTemplateIssue\HotChocolateTemplateIssue.csproj]
    0 Warning(s)
    3 Error(s)

Expected behavior
The build should be successful

Desktop (please complete the following information):

• OS: Windows
• Version 10 Pro

Additional context
The Startup.cs file is missing a using for HotChocolate. Inserting the following line at line 4 resolves the issue:

using HotChocolate;

[RohrerF]

Verifyed this issue. PR opened 🏃

[michaelstaib]

We have fixed this issue for V11

[michaelstaib]

I will close this bug