Agent doesn't start : unable to retrieve connection to Kibana (.net core 3.1)

Elastic Observability APM
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7

@GregKalapos

Thank you spending time on my problem.

When adding "Elastic": "Trace" in this section , I get the following exception on CreateLogger() call

An unhandled exception of type 'System.InvalidOperationException' occurred in Serilog.Settings.Configuration.dll: 'No LoggingLevelSwitch has been declared with name "Trace". You might be missing a section "LevelSwitches":{"Trace":"InitialLevel"}'
Stack trace:
 >   at Serilog.Settings.Configuration.ResolutionContext.LookUpSwitchByName(String switchName)

I'm pretty sure it's my APM that is misconfigured, could you provide a full working sample that I could test on my stack ?
Or do you have other ideas to solve this problem ?

Thank you