Add another posttype to Divi's blog module listings

functions.php

<?php
/**
 * Copy the block below into your child theme's functions.php
 */

// Add another posttype to Divi's blog module listings.
add_action( 'pre_get_posts', 'divi_child_add_post_type_to_blog_module', 12 );
function divi_child_add_post_type_to_blog_module( $wp_query ) {
	$slug = 'blog-module'; // ADJUST! => on which page to enable ...
	$cpt  = 'project'; // ADJUST! => desired additional post type
	global $post;
	if( $post->post_name == $slug && ! $wp_query->is_main_query() && $wp_query->query['orderby'] != 'menu_order' ) {
		$wp_query->query_vars['post_type'] = array( 'post', $cpt );
		// error_log( print_r( $wp_query, 1 ) ); // uncomment to debug
	}
}