检查了很多遍代码..一直报这个错误..也没有其他信息

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
                   assembly="Teed"
                   namespace="Teed.Model">

  <class name ="User" table="user">
    <id name="Id" column="iduser" type="Int32">
      <generator class="native"></generator>
    </id>
    <property name ="account" column="account" type="String"></property>
    <property name ="password" column="password" type="String"></property>
  </class>

</hibernate-mapping>

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-configuration xmlns="urn:nhibernate-configuration-2.2">
  <session-factory>
    <property name="connection.provider">NHibernate.Connection.DriverConnectionProvider</property>
    <property name="dialect">NHibernate.Dialect.MySQL5Dialect</property>
    <property name="connection.driver_class">NHibernate.Driver.MySqlDataDriver</property> <!--使用什么数据库-->
    <property name="connection.connection_string">Server=localhost;Database=mygamedb;User ID=root;Password=root;</property>

    <property name="show_sql">true</property>
  </session-factory>
</hibernate-configuration>