Unrecognized element 'providers'

[wilsonxyz]

When i try to code, i got errors like this.
System.TypeInitializationException: 'The type initializer for 'System.Data.Entity.Internal.AppConfig' threw an exception.' Inner Exception ConfigurationErrorsException: Unrecognized element 'providers'.
here my app.config

<providers>        
        <provider invariantName="MySql.Data.MySqlClient"
            type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6"/>            
        <provider invariantName="System.Data.SqlClient"
            type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer"/>
      </providers>

please advice.