再次检查是否使用了正确的web.config.错误中提到的SQL Server是MS SqlServer，而不是mysql.

Double check that the correct web.config is used. SQL Server as mentioned in you error is MS SqlServer and not mysql.

您忘记将其添加到web.config吗?

Have you forgot to add this to your web.config?

<configSections>
  <section name="hibernate-configuration"
  type="NHibernate.Cfg.ConfigurationSectionHandler, NHibernate" />
</configSections>