When using Serilog with .NET, I want to use a different output template for error level logs, since I want the error logs to contain additional information. I'm using the appsettings.json to configure how Serilog behaves, so I need a solution which uses JSON instead of C#.

I am able to use "restrictiedToMinimumLevel" : "Error" to produce error logs with the additional information I want, but this results in the logs appearing twice (once with the extra information, and once without). I've also found a way to do exactly what I want using Serilog.Filters.Expressions, but that package was deprecated several years ago. There's a new package, Serilog.Expressions, but the syntax appears to have changed, because my application fails to start using the old syntax.

Here is what I've tried using with Serilog.Expressions:

{
  "Serilog": {
    "Using": [ "Serilog.Expressions" ],
    "WriteTo": [
      {
        "Name": "Console",
        "Args": {
          "restrictedToMinimumLevel": "Error",
          "outputTemplate": "This should only log errors: {Message} {Exception}"
        }
      },
      {
        "Name": "Logger",
        "Args": {
          "configureLogger": {
            "Filter": [
              {
                "Name": "ByIncludingOnly",
                "Args": {
                  "expression": "@Level != 'Error'"
                }
              }
            ],
            "WriteTo": [
              {
                "Name": "Console",
                "Args": {
                  "outputTemplate": "This should log anything that isn't an error: {Message} {Exception}"
                }
              }
            ]
          }
        }
      }
    ]
  }
}

How can I use different output templates for different log levels when using Serilog?