Haskell erro load module with mysql : Haskell : Database.MySQL.Base

**

    insert_Producto  = do
        conn <- connect
        defaultConnectInfo {ciUser = "root", ciPassword = "", ciDatabase = "prueba"}
        oks <- executeMany conn "delete from producto"

**


load Module :

**Conexion.hs:27:5: error:
    The last statement in a 'do' block must be an expression
      oks <- executeMany conn "delete from producto"
   |
27 |     oks <- executeMany conn "delete from producto"    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^**



I try to load the module, but it marks me error.
Does anyone know what would be the right way to do it?
