Unable to find the requested .Net Framework Data Provider.

Hi Everybody

I'm having a connection string to Mysql in the web.config like this :

<connectionStrings>
    <add name="ApplicationServices"
         connectionString="Server=myserver;Port=3306;Database=DB_Website;Uid=user;Pwd=password;"  
         providerName="MySql.Data.MySqlClient" />
   
      </connectionStrings>

I have installed Mysql connecter MySQL Connector Net 6.7.4 .

My  Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272