<PackageReference Include="System.Configuration.ConfigurationManager" Version="10.0.0-rc.2.25502.107" />

System.Configuration.Provider.ProviderException

public class ProviderException : Exception
The exception that is thrown when a configuration provider error has occurred. This exception class is also used by providers to throw exceptions when internal errors occur within the provider that do not map to other pre-existing exception classes.
namespace System.Configuration.Provider { public class ProviderException : Exception { public ProviderException(); public ProviderException(string message); public ProviderException(string message, Exception innerException); protected ProviderException(SerializationInfo info, StreamingContext context); } }