The using directive for 'Azure.Core' appeared previously in this namespace

'ApplicationInsightsExtensions.AddApplicationInsightsTelemetry(IServiceCollection, string)' is obsolete: 'InstrumentationKey based global ingestion is being deprecated. Use the AddApplicationInsightsTelemetry() overload which accepts Action<ApplicationInsightsServiceOptions> and set ApplicationInsightsServiceOptions.ConnectionString. See https://github.com/microsoft/ApplicationInsights-dotnet/issues/2560 for more details.'

The using directive for 'Azure.Identity' appeared previously in this namespace

Possible null reference argument for parameter 'uriString' in 'Uri.Uri(string uriString)'.

Converting null literal or possible null value to non-nullable type.

Dereference of a possibly null reference.

Converting null literal or possible null value to non-nullable type.

Possible null reference return.

Converting null literal or possible null value to non-nullable type.