Joomla 4 : After submitting modal popup form not showing enqueue message

[Poonam Baravkar]

Hello 

I have upgraded Joomla 3 to Joomla 4 on my website. I am having an issue submitting the form that is open on the modal popup and does not show an en queue message when submitting the form.

The code below to redirect and show success message -

$this->setRedirect(Uri::base() . "index.php?option=com_quick2cart&view=vendor&layout=contactus&store_id=" . $storeid . '&tmpl=component', $msgsent);

[Viper]

The messages displayed in container with id="system-message-container". Script in 'media/system/js/messages.js' searching for container in current document. Not an iframe(modal displayed in iframe).