Problems configuring Serilog from appSettings.json

I have a question relating the configuration of Serilog by appSettings.json. My project is a console application, based on .Net Core 3.0. I tried to setup Serilog in order to write log information to the console and to a log file.

When I configure everything within my code itself - everything works like expected.

But when I try to import the Serilog configuration settings from an appsettings.json file, I have the problem, that my ConsoleSink works fine, but my FileSink not.

Here is, what I wrote into my appsettings.json:

{ "Serilog": { "Using": [ "Serilog.Sinks.File", "Serilog.Sinks.Console" ], "MinimumLevel": "Debug", "WriteTo": [ { "Name": "File", "Args": { "pathFormat": "Xlog.txt" } }, { "Name": "Console" } ] } } 

And this is the associated code:

 IConfiguration configSerilog = new ConfigurationBuilder() .AddJsonFile("appsettings.json", true, true) .Build(); log = new LoggerConfiguration() .ReadFrom.Configuration(configSerilog) .CreateLogger(); log.Information("Initializing Serilog...."); 

My 'test-log-message' get's displayed in my console window, but I didn't get a logfile.

As I mentioned, it works, when I configure the Serilog in my code itself, rather than by the appsettings. So, I do have the appropriate access rights to create a file.

Any ideas or hints?