Problems entering information in MySQL database - php

Question

I'm trying to introduce some data info in the DB on production mode but is not working I'm using PDO for the connection to the DB, in my localhost works correctly but in the GoDaddy server isn't.
I'm using MVC, when I submit I send the data by POST and in the controller is like this
when i make a submit i execute this
$Registro = new ControladorUsuarios();
$Registro -> ctrRegistroUsuario();
static public function ctrRegistroUsuario(){
if (isset($_POST["regUsuario"])) {
if (preg_match('/^[a-zA-Z0-9ñÑáéíóúÁÉÍÓÚ.]+$/', $_POST["regUsuario"]) &&
preg_match('/^[^0-9][a-zA-Z0-9_]+([.][a-zA-Z0-9_]+)*[#][a-zA-Z0-9_]+([.][a-zA-Z0-9_]+)*[.][a-zA-Z]{2,4}$/', $_POST["regEmail"]) &&
preg_match('/^[a-z0-9][a-z0-9.]+$/', $_POST["regPassword"])) {
$encriptar = crypt($_POST["regPassword"], '//hash');
$encriptarEmail = md5($_POST["regEmail"]);
$datos = array(
"usuario" => strtolower($_POST["regUsuario"]),
"email" => strtolower($_POST["regEmail"]),
"password" => $encriptar,
"nombre" => strtolower($_POST["regNombre"]),
"apellidos" => strtolower($_POST["regApellido"]),
"telefono" => $_POST["regTelefono"],
"verificacion" => $encriptarEmail
);
$tabla = "usuario";
$respuesta = ModeloUsuarios::mdlRegistroUsuario($tabla, $datos);
if ($respuesta == "ok") {
/*===================================================================
= HERE I SEND A CONFIRMATION MAIL ACCOUNT =
===================================================================*/
$envio = $mail->Send();
if (!$envio) {
echo'error';
} else {
echo 'success';
}
}else{
echo 'error2';
}
}
}
}
when i make a submit the error goes to error2 and in my model i have this
public static function mdlRegistroUsuario($tabla, $datos){
$stmt = Conexion::conectar()->prepare("INSERT INTO $tabla (usuario, email, password, nombre, apellidos, telefono, verificacion) VALUES (:usuario, :email, :password, :nombre, :apellidos, :telefono, :verificacion)");
$stmt->bindParam(":usuario", $datos["usuario"], PDO::PARAM_STR);
$stmt->bindParam(":email", $datos["email"], PDO::PARAM_STR);
$stmt->bindParam(":password", $datos["password"], PDO::PARAM_STR);
$stmt->bindParam(":nombre", $datos["nombre"], PDO::PARAM_STR);
$stmt->bindParam(":apellidos", $datos["apellidos"], PDO::PARAM_STR);
$stmt->bindParam(":telefono", $datos["telefono"], PDO::PARAM_STR);
$stmt->bindParam(":verificacion", $datos["verificacion"], PDO::PARAM_STR);
if ($stmt->execute()) {
return "ok";
} else {
return errorinfo();
}
$stmt->close();
$stmt = null;
}
In my error_log appears this errors
#0 route/Controladores/usuarios.controlador.php(33): ModeloUsuarios::mdlRegistroUsuario('usuario', Array)
#1 route/registro.php(42): ControladorUsuarios::ctrRegistroUsuario()
#5 {main}
thrown in route/Modelos/usuarios.modelo.php on line 31
I really don't know what the problem is hope someone can help me