Configuration via appsettings.json

[lowkay]

Howdy,

Firstly, I'm using the 4.0.0-beta3 release as I understand the 3.x releases have a critical bug.

I have tried to follow the readme to configure the sink via appsettings.json, however I receive the following error:

"Unable to find a method called LokiHttp for supplied arguments: labels, serverUrl. Candidate methods are:
LokiHttp(configFactory)"

I attribute this to a pull request that removed the logging configuration extension overloads and replaced them with a single argument. However, I cannot figure out whether it's even possible to leverage this argument from appsettings.json as Serilog complains it cannot instantiate a Func.

I have worked around this issue by adding my own extension method, however, I would like to bring it to your attention as it breaks for anybody using the existing configuration file approach.