Getting error Could not load file or assembly

[Shubbi]

InnerException {"Could not load file or assembly 'System.Configuration.Abstractions.NetStandard, Version=2.0.2.45, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.":"System.Configuration.Abstractions.NetStandard, Version=2.0.2.45, Culture=neutral, PublicKeyToken=null"} System.Exception {System.IO.FileNotFoundException}

Tried adding

It doesn't work

Why is the PublicKeyToken null?

[Shubbi]

Tried adding
< dependentAssembly>
< assemblyIdentity name="System.Configuration.Abstractions.NetStandard" culture="neutral" publicKeyToken="null"/>
< bindingRedirect oldVersion="0.0.0.0-2.0.2.45" newVersion="2.0.2.45" />
< /dependentAssembly>
doesn't work

[YasirSyed]

I am getting this issue too. I am injecting the dependency like this:
services.AddSingleton<IConfigurationManager, ConfigurationManager>();

And then calling a class that depends upon the IConfigurationManager.

But I get the error that Shubbi is mentioning.

[davidwhitney]

Hey folks - can you provide more information on the runtime versions you're using (or a small repro) and I'll dig through all of this.

Looks like they're both netcore issues above?