[WARN] Error creating event logger: No event:Using configuration section is defined and no Serilog assemblies were found.
This is most likely because the application is published as single-file.
Either add a event:Using section or explicitly specify assemblies that contains sinks and other types through the reader options. For example:
var options = new ConfigurationReaderOptions(typeof(ConsoleLoggerConfigurationExtensions).Assembly, typeof(SerilogExpression).Assembly);
new LoggerConfiguration().ReadFrom.Configuration(configuration, options);
 [DBUG] Logging at level Verbose
 [VERB] Loaded validation plugin Cloudflare from D:\letsencrypt-2.1\PKISharp.WACS.Plugins.ValidationPlugins.Cloudflare.dll
 [VERB] W3SVC detected and running
 [VERB] FTPSVC detected and running
 [VERB] Looking for settings.json in D:\letsencrypt-2.1\
 [DBUG] Use existing configuration folder C:\ProgramData\win-acme
 [DBUG] Use existing configuration folder C:\ProgramData\win-acme\acme-v02.api.letsencrypt.org
 [DBUG] Use existing log folder C:\ProgramData\win-acme\acme-v02.api.letsencrypt.org\Log
 [DBUG] Use existing cache folder C:\ProgramData\win-acme\acme-v02.api.letsencrypt.org\Certificates
 [WARN] Error creating disk logger: No disk:Using configuration section is defined and no Serilog assemblies were found.
This is most likely because the application is published as single-file.
Either add a disk:Using section or explicitly specify assemblies that contains sinks and other types through the reader options. For example:
var options = new ConfigurationReaderOptions(typeof(ConsoleLoggerConfigurationExtensions).Assembly, typeof(SerilogExpression).Assembly);
new LoggerConfiguration().ReadFrom.Configuration(configuration, options);