The configuration section 'log4net' cannot be read because it is missing a section declaration
Solution: inside <configSections>---Add
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
Solution: inside <configSections>---Add
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />