I am having issues getting this code work on a basic level.

[pixelparlordev]

I actually get a 500 error or just a white screen when I follow your instructions. This seems to be an issue with a lot of custom divi module code that people post.

I have had some luck with this code.

(functions.php)

function DS_Custom_Modules(){
 if(class_exists("ET_Builder_Module")){
 include("ds-custom-modules.php");
 }
}

function Prep_DS_Custom_Modules(){
 global $pagenow;

$is_admin = is_admin();
 $action_hook = $is_admin ? 'wp_loaded' : 'wp';
 $required_admin_pages = array( 'edit.php', 'post.php', 'post-new.php', 'admin.php', 'customize.php', 'edit-tags.php', 'admin-ajax.php', 'export.php' ); // list of admin pages where we need to load builder files
 $specific_filter_pages = array( 'edit.php', 'admin.php', 'edit-tags.php' );
 $is_edit_library_page = 'edit.php' === $pagenow && isset( $_GET['post_type'] ) && 'et_pb_layout' === $_GET['post_type'];
 $is_role_editor_page = 'admin.php' === $pagenow && isset( $_GET['page'] ) && 'et_divi_role_editor' === $_GET['page'];
 $is_import_page = 'admin.php' === $pagenow && isset( $_GET['import'] ) && 'wordpress' === $_GET['import'];
 $is_edit_layout_category_page = 'edit-tags.php' === $pagenow && isset( $_GET['taxonomy'] ) && 'layout_category' === $_GET['taxonomy'];

if ( ! $is_admin || ( $is_admin && in_array( $pagenow, $required_admin_pages ) && ( ! in_array( $pagenow, $specific_filter_pages ) || $is_edit_library_page || $is_role_editor_page || $is_edit_layout_category_page || $is_import_page ) ) ) {
 add_action($action_hook, 'DS_Custom_Modules', 9789);
 }
}
Prep_DS_Custom_Modules();

(ds-custom-modules.php)

<?php

class DS_Custom_Module_Blog extends ET_Builder_Module {
 function init() {
 $this->name = esc_html__( 'Blog - Custom Grid', 'et_builder' );
 $this->slug = 'et_pb_blog_2';

 $this->whitelisted_fields = array(
 'fullwidth',
 'posts_number',
 'include_categories',
 'meta_date',
 'show_thumbnail',
 'show_content',
 'show_more',
 'show_author',
 'show_date',
 'show_categories',
 'show_comments',
 'show_pagination',
 'offset_number',
 'background_layout',
 'admin_label',
 'module_id',
 'module_class',
 'masonry_tile_background_color',
 'use_dropshadow',
 'use_overlay',
 'overlay_icon_color',
 'hover_overlay_color',
 'hover_icon',
 );

 $this->fields_defaults = array(
 'fullwidth' => array( 'off' ),
 'posts_number' => array( 10, 'add_default_setting' ),
 'meta_date' => array( 'M j, Y', 'add_default_setting' ),
 'show_thumbnail' => array( 'on' ),
 'show_content' => array( 'off' ),
 'show_more' => array( 'off' ),
 'show_author' => array( 'on' ),
 'show_date' => array( 'on' ),
 'show_categories' => array( 'on' ),
 'show_comments' => array( 'off' ),
 'show_pagination' => array( 'on' ),
 'offset_number' => array( 0, 'only_default_setting' ),
 'background_layout' => array( 'light' ),
 'use_dropshadow' => array( 'off' ),
 'use_overlay' => array( 'off' ),
 );

 $this->main_css_element = '%%order_class%% .et_pb_post';
 $this->advanced_options = array(
 'fonts' => array(
 'header' => array(
 'label' => esc_html__( 'Header', 'et_builder' ),
 'css' => array(
 'main' => "{$this->main_css_element} h2",
 'important' => 'all',
 ),
 ),
 'meta' => array(
 'label' => esc_html__( 'Meta', 'et_builder' ),
 'css' => array(
 'main' => "{$this->main_css_element} .post-meta",
 ),
 ),
 'body' => array(
 'label' => esc_html__( 'Body', 'et_builder' ),
 'css' => array(
 'line_height' => "{$this->main_css_element} p",
 ),
 ),
 ),
 'border' => array(),
 );
 $this->custom_css_options = array(
 'title' => array(
 'label' => esc_html__( 'Title', 'et_builder' ),
 'selector' => '.et_pb_post h2',
 ),
 'post_meta' => array(
 'label' => esc_html__( 'Post Meta', 'et_builder' ),
 'selector' => '.et_pb_post .post-meta',
 ),
 'pagenavi' => array(
 'label' => esc_html__( 'Pagenavi', 'et_builder' ),
 'selector' => '.wp_pagenavi',
 ),
 'featured_image' => array(
 'label' => esc_html__( 'Featured Image', 'et_builder' ),
 'selector' => '.et_pb_image_container',
 ),
 'read_more' => array(
 'label' => esc_html__( 'Read More Button', 'et_builder' ),
 'selector' => '.et_pb_post .more-link',
 ),
 );
 }

 function get_fields() {
 $fields = array(
 'posts_number' => array(
 'label' => esc_html__( 'Posts Number', 'et_builder' ),
 'type' => 'text',
 'option_category' => 'configuration',
 'description' => esc_html__( 'Choose how much posts you would like to display per page.', 'et_builder' ),
 ),
 'include_categories' => array(
 'label' => esc_html__( 'Include Categories', 'et_builder' ),
 'renderer' => 'et_builder_include_categories_option',
 'option_category' => 'basic_option',
 'renderer_options' => array(
 'use_terms' => false,
 ),
 'description' => esc_html__( 'Choose which categories you would like to include in the feed.', 'et_builder' ),
 ),
 'meta_date' => array(
 'label' => esc_html__( 'Meta Date Format', 'et_builder' ),
 'type' => 'text',
 'option_category' => 'configuration',
 'description' => esc_html__( 'If you would like to adjust the date format, input the appropriate PHP date format here.', 'et_builder' ),
 ),
 'show_thumbnail' => array(
 'label' => esc_html__( 'Show Featured Image', 'et_builder' ),
 'type' => 'yes_no_button',
 'option_category' => 'configuration',
 'options' => array(
 'on' => esc_html__( 'Yes', 'et_builder' ),
 'off' => esc_html__( 'No', 'et_builder' ),
 ),
 'description' => esc_html__( 'This will turn thumbnails on and off.', 'et_builder' ),
 ),
 'show_content' => array(
 'label' => esc_html__( 'Content', 'et_builder' ),
 'type' => 'select',
 'option_category' => 'configuration',
 'options' => array(
 'off' => esc_html__( 'Show Excerpt', 'et_builder' ),
 'on' => esc_html__( 'Show Content', 'et_builder' ),
 ),
 'affects' => array(
 '#et_pb_show_more',
 ),
 'description' => esc_html__( 'Showing the full content will not truncate your posts on the index page. Showing the excerpt will only display your excerpt text.', 'et_builder' ),
 ),
 'show_more' => array(
 'label' => esc_html__( 'Read More Button', 'et_builder' ),
 'type' => 'yes_no_button',
 'option_category' => 'configuration',
 'options' => array(
 'off' => esc_html__( 'Off', 'et_builder' ),
 'on' => esc_html__( 'On', 'et_builder' ),
 ),
 'depends_show_if' => 'off',
 'description' => esc_html__( 'Here you can define whether to show "read more" link after the excerpts or not.', 'et_builder' ),
 ),
 'show_author' => array(
 'label' => esc_html__( 'Show Author', 'et_builder' ),
 'type' => 'yes_no_button',
 'option_category' => 'configuration',
 'options' => array(
 'on' => esc_html__( 'Yes', 'et_builder' ),
 'off' => esc_html__( 'No', 'et_builder' ),
 ),
 'description' => esc_html__( 'Turn on or off the author link.', 'et_builder' ),
 ),
 'show_date' => array(
 'label' => esc_html__( 'Show Date', 'et_builder' ),
 'type' => 'yes_no_button',
 'option_category' => 'configuration',
 'options' => array(
 'on' => esc_html__( 'Yes', 'et_builder' ),
 'off' => esc_html__( 'No', 'et_builder' ),
 ),
 'description' => esc_html__( 'Turn the date on or off.', 'et_builder' ),
 ),
 'show_categories' => array(
 'label' => esc_html__( 'Show Categories', 'et_builder' ),
 'type' => 'yes_no_button',
 'option_category' => 'configuration',
 'options' => array(
 'on' => esc_html__( 'Yes', 'et_builder' ),
 'off' => esc_html__( 'No', 'et_builder' ),
 ),
 'description' => esc_html__( 'Turn the category links on or off.', 'et_builder' ),
 ),
 'show_comments' => array(
 'label' => esc_html__( 'Show Comment Count', 'et_builder' ),
 'type' => 'yes_no_button',
 'option_category' => 'configuration',
 'options' => array(
 'on' => esc_html__( 'Yes', 'et_builder' ),
 'off' => esc_html__( 'No', 'et_builder' ),
 ),
 'description' => esc_html__( 'Turn comment count on and off.', 'et_builder' ),
 ),
 'show_pagination' => array(
 'label' => esc_html__( 'Show Pagination', 'et_builder' ),
 'type' => 'yes_no_button',
 'option_category' => 'configuration',
 'options' => array(
 'on' => esc_html__( 'Yes', 'et_builder' ),
 'off' => esc_html__( 'No', 'et_builder' ),
 ),
 'description' => esc_html__( 'Turn pagination on and off.', 'et_builder' ),
 ),
 'offset_number' => array(
 'label' => esc_html__( 'Offset Number', 'et_builder' ),
 'type' => 'text',
 'option_category' => 'configuration',
 'description' => esc_html__( 'Choose how many posts you would like to offset by', 'et_builder' ),
 ),
 'use_overlay' => array(
 'label' => esc_html__( 'Featured Image Overlay', 'et_builder' ),
 'type' => 'yes_no_button',
 'option_category' => 'layout',
 'options' => array(
 'off' => esc_html__( 'Off', 'et_builder' ),
 'on' => esc_html__( 'On', 'et_builder' ),
 ),
 'affects' => array(
 '#et_pb_overlay_icon_color',
 '#et_pb_hover_overlay_color',
 '#et_pb_hover_icon',
 ),
 'description' => esc_html__( 'If enabled, an overlay color and icon will be displayed when a visitors hovers over the featured image of a post.', 'et_builder' ),
 ),
 'overlay_icon_color' => array(
 'label' => esc_html__( 'Overlay Icon Color', 'et_builder' ),
 'type' => 'color',
 'custom_color' => true,
 'depends_show_if' => 'on',
 'description' => esc_html__( 'Here you can define a custom color for the overlay icon', 'et_builder' ),
 ),
 'hover_overlay_color' => array(
 'label' => esc_html__( 'Hover Overlay Color', 'et_builder' ),
 'type' => 'color-alpha',
 'custom_color' => true,
 'depends_show_if' => 'on',
 'description' => esc_html__( 'Here you can define a custom color for the overlay', 'et_builder' ),
 ),
 'hover_icon' => array(
 'label' => esc_html__( 'Hover Icon Picker', 'et_builder' ),
 'type' => 'text',
 'option_category' => 'configuration',
 'class' => array( 'et-pb-font-icon' ),
 'renderer' => 'et_pb_get_font_icon_list',
 'renderer_with_field' => true,
 'depends_show_if' => 'on',
 'description' => esc_html__( 'Here you can define a custom icon for the overlay', 'et_builder' ),
 ),
 'background_layout' => array(
 'label' => esc_html__( 'Text Color', 'et_builder' ),
 'type' => 'select',
 'option_category' => 'color_option',
 'options' => array(
 'light' => esc_html__( 'Dark', 'et_builder' ),
 'dark' => esc_html__( 'Light', 'et_builder' ),
 ),
 'depends_default' => true,
 'description' => esc_html__( 'Here you can choose whether your text should be light or dark. If you are working with a dark background, then your text should be light. If your background is light, then your text should be set to dark.', 'et_builder' ),
 ),
 'masonry_tile_background_color' => array(
 'label' => esc_html__( 'Grid Tile Background Color', 'et_builder' ),
 'type' => 'color-alpha',
 'custom_color' => true,
 'tab_slug' => 'advanced',
 'depends_show_if' => 'off',
 ),
 'use_dropshadow' => array(
 'label' => esc_html__( 'Use Dropshadow', 'et_builder' ),
 'type' => 'yes_no_button',
 'option_category' => 'layout',
 'options' => array(
 'off' => esc_html__( 'Off', 'et_builder' ),
 'on' => esc_html__( 'On', 'et_builder' ),
 ),
 'tab_slug' => 'advanced',
 'depends_show_if' => 'off',
 ),
 'disabled_on' => array(
 'label' => esc_html__( 'Disable on', 'et_builder' ),
 'type' => 'multiple_checkboxes',
 'options' => array(
 'phone' => esc_html__( 'Phone', 'et_builder' ),
 'tablet' => esc_html__( 'Tablet', 'et_builder' ),
 'desktop' => esc_html__( 'Desktop', 'et_builder' ),
 ),
 'additional_att' => 'disable_on',
 'option_category' => 'configuration',
 'description' => esc_html__( 'This will disable the module on selected devices', 'et_builder' ),
 ),
 'admin_label' => array(
 'label' => esc_html__( 'Admin Label', 'et_builder' ),
 'type' => 'text',
 'description' => esc_html__( 'This will change the label of the module in the builder for easy identification.', 'et_builder' ),
 ),
 'module_id' => array(
 'label' => esc_html__( 'CSS ID', 'et_builder' ),
 'type' => 'text',
 'option_category' => 'configuration',
 'tab_slug' => 'custom_css',
 'option_class' => 'et_pb_custom_css_regular',
 ),
 'module_class' => array(
 'label' => esc_html__( 'CSS Class', 'et_builder' ),
 'type' => 'text',
 'option_category' => 'configuration',
 'tab_slug' => 'custom_css',
 'option_class' => 'et_pb_custom_css_regular',
 ),
 );
 return $fields;
 }

 function shortcode_callback( $atts, $content = null, $function_name ) {
 $module_id = $this->shortcode_atts['module_id'];
 $module_class = $this->shortcode_atts['module_class'];
 $fullwidth = $this->shortcode_atts['fullwidth'];
 $posts_number = $this->shortcode_atts['posts_number'];
 $include_categories = $this->shortcode_atts['include_categories'];
 $meta_date = $this->shortcode_atts['meta_date'];
 $show_thumbnail = $this->shortcode_atts['show_thumbnail'];
 $show_content = $this->shortcode_atts['show_content'];
 $show_author = $this->shortcode_atts['show_author'];
 $show_date = $this->shortcode_atts['show_date'];
 $show_categories = $this->shortcode_atts['show_categories'];
 $show_comments = $this->shortcode_atts['show_comments'];
 $show_pagination = $this->shortcode_atts['show_pagination'];
 $background_layout = $this->shortcode_atts['background_layout'];
 $show_more = $this->shortcode_atts['show_more'];
 $offset_number = $this->shortcode_atts['offset_number'];
 $masonry_tile_background_color = $this->shortcode_atts['masonry_tile_background_color'];
 $use_dropshadow = $this->shortcode_atts['use_dropshadow'];
 $overlay_icon_color = $this->shortcode_atts['overlay_icon_color'];
 $hover_overlay_color = $this->shortcode_atts['hover_overlay_color'];
 $hover_icon = $this->shortcode_atts['hover_icon'];
 $use_overlay = $this->shortcode_atts['use_overlay'];

 global $paged;

 $module_class = ET_Builder_Element::add_module_order_class( $module_class, $function_name );

 $container_is_closed = false;

 // remove all filters from WP audio shortcode to make sure current theme doesn't add any elements into audio module
 remove_all_filters( 'wp_audio_shortcode_library' );
 remove_all_filters( 'wp_audio_shortcode' );
 remove_all_filters( 'wp_audio_shortcode_class');

 if ( '' !== $masonry_tile_background_color ) {
 ET_Builder_Element::set_style( $function_name, array(
 'selector' => '%%order_class%%.et_pb_blog_grid .et_pb_post',
 'declaration' => sprintf(
 'background-color: %1$s;',
 esc_html( $masonry_tile_background_color )
 ),
 ) );
 }

 if ( '' !== $overlay_icon_color ) {
 ET_Builder_Element::set_style( $function_name, array(
 'selector' => '%%order_class%% .et_overlay:before',
 'declaration' => sprintf(
 'color: %1$s !important;',
 esc_html( $overlay_icon_color )
 ),
 ) );
 }

 if ( '' !== $hover_overlay_color ) {
 ET_Builder_Element::set_style( $function_name, array(
 'selector' => '%%order_class%% .et_overlay',
 'declaration' => sprintf(
 'background-color: %1$s;',
 esc_html( $hover_overlay_color )
 ),
 ) );
 }

 if ( 'on' === $use_overlay ) {
 $data_icon = '' !== $hover_icon
 ? sprintf(
 ' data-icon="%1$s"',
 esc_attr( et_pb_process_font_icon( $hover_icon ) )
 )
 : '';

 $overlay_output = sprintf(
 '<span class="et_overlay%1$s"%2$s></span>',
 ( '' !== $hover_icon ? ' et_pb_inline_icon' : '' ),
 $data_icon
 );
 }

 $overlay_class = 'on' === $use_overlay ? ' et_pb_has_overlay' : '';

 if ( 'on' !== $fullwidth ){
 if ( 'on' === $use_dropshadow ) {
 $module_class .= ' et_pb_blog_grid_dropshadow';
 }

 wp_enqueue_script( 'salvattore' );

 $background_layout = 'light';
 }

 $args = array( 'posts_per_page' => (int) $posts_number );

 $et_paged = is_front_page() ? get_query_var( 'page' ) : get_query_var( 'paged' );

 if ( is_front_page() ) {
 $paged = $et_paged;
 }

 if ( '' !== $include_categories )
 $args['cat'] = $include_categories;

 if ( ! is_search() ) {
 $args['paged'] = $et_paged;
 }

 if ( '' !== $offset_number && ! empty( $offset_number ) ) {
 /**
 * Offset + pagination don't play well. Manual offset calculation required
 * @see: https://codex.wordpress.org/Making_Custom_Queries_using_Offset_and_Pagination
 */
 if ( $paged > 1 ) {
 $args['offset'] = ( ( $et_paged - 1 ) * intval( $posts_number ) ) + intval( $offset_number );
 } else {
 $args['offset'] = intval( $offset_number );
 }
 }

 if ( is_single() && ! isset( $args['post__not_in'] ) ) {
 $args['post__not_in'] = array( get_the_ID() );
 }

 ob_start();

 query_posts( $args );

 if ( have_posts() ) {
 while ( have_posts() ) {
 the_post();

 $post_format = et_pb_post_format();

 $thumb = '';

 $width = 'on' === $fullwidth ? 1080 : 400;
 $width = (int) apply_filters( 'et_pb_blog_image_width', $width );

 $height = 'on' === $fullwidth ? 675 : 250;
 $height = (int) apply_filters( 'et_pb_blog_image_height', $height );
 $classtext = 'on' === $fullwidth ? 'et_pb_post_main_image' : '';
 $titletext = get_the_title();
 $thumbnail = get_thumbnail( $width, $height, $classtext, $titletext, $titletext, false, 'Blogimage' );
 $thumb = $thumbnail["thumb"];

 $no_thumb_class = '' === $thumb || 'off' === $show_thumbnail ? ' et_pb_no_thumb' : '';

 if ( in_array( $post_format, array( 'video', 'gallery' ) ) ) {
 $no_thumb_class = '';
 } ?>

 <article id="post-<?php the_ID(); ?>" <?php post_class( 'et_pb_post' . $no_thumb_class . $overlay_class ); ?>>

 <h2 class="entry-title blog-2" style="position: relative; top: -20px; margin-bottom: 10px;"><a href="<?php esc_url( the_permalink() ); ?>"><?php the_title(); ?></a></h2>

 <?php
 et_divi_post_format_content();

 if ( ! in_array( $post_format, array( 'link', 'audio', 'quote' ) ) ) {
 if ( 'video' === $post_format && false !== ( $first_video = et_get_first_video() ) ) :
 printf(
 '<div class="et_main_video_container">
 %1$s
 </div>',
 $first_video
 );
 elseif ( 'gallery' === $post_format ) :
 et_pb_gallery_images( 'slider' );
 elseif ( '' !== $thumb && 'on' === $show_thumbnail ) :
 if ( 'on' !== $fullwidth ) echo '<div class="et_pb_image_container">'; ?>
 <a href="<?php esc_url( the_permalink() ); ?>" class="entry-featured-image-url">
 <?php print_thumbnail( $thumb, $thumbnail["use_timthumb"], $titletext, $width, $height ); ?>
 <?php if ( 'on' === $use_overlay ) {
 echo $overlay_output;
 } ?>
 </a>
 <?php
 if ( 'on' !== $fullwidth ) echo '</div> <!-- .et_pb_image_container -->';
 endif;
 } ?>

 <?php if ( 'off' === $fullwidth || ! in_array( $post_format, array( 'link', 'audio', 'quote' ) ) ) { ?>
 <?php if ( ! in_array( $post_format, array( 'link', 'audio' ) ) ) { ?>
 <?php } ?>

 <?php
 if ( 'on' === $show_author || 'on' === $show_date || 'on' === $show_categories || 'on' === $show_comments ) {
 printf( '<p class="post-meta">%1$s %2$s %3$s %4$s %5$s %6$s %7$s</p>',
 (
 'on' === $show_author
 ? sprintf( __( 'by %s', 'et_builder' ), '<span class="author vcard">' . et_pb_get_the_author_posts_link() . '</span>' )
 : ''
 ),
 (
 ( 'on' === $show_author && 'on' === $show_date )
 ? ' | '
 : ''
 ),
 (
 'on' === $show_date
 ? sprintf( __( '%s', 'et_builder' ), '<span class="published">' . esc_html( get_the_date( $meta_date ) ) . '</span>' )
 : ''
 ),
 (
 (( 'on' === $show_author || 'on' === $show_date ) && 'on' === $show_categories)
 ? ' | '
 : ''
 ),
 (
 'on' === $show_categories
 ? get_the_category_list(', ')
 : ''
 ),
 (
 (( 'on' === $show_author || 'on' === $show_date || 'on' === $show_categories ) && 'on' === $show_comments)
 ? ' | '
 : ''
 ),
 (
 'on' === $show_comments
 ? sprintf( esc_html( _nx( '1 Comment', '%s Comments', get_comments_number(), 'number of comments', 'et_builder' ) ), number_format_i18n( get_comments_number() ) )
 : ''
 )
 );
 }

 $post_content = get_the_content();

 // do not display the content if it contains Blog, Post Slider, Fullwidth Post Slider, or Portfolio modules to avoid infinite loops
 if ( ! has_shortcode( $post_content, 'et_pb_blog' ) && ! has_shortcode( $post_content, 'et_pb_portfolio' ) && ! has_shortcode( $post_content, 'et_pb_post_slider' ) && ! has_shortcode( $post_content, 'et_pb_fullwidth_post_slider' ) ) {
 if ( 'on' === $show_content ) {
 global $more;

 // page builder doesn't support more tag, so display the_content() in case of post made with page builder
 if ( et_pb_is_pagebuilder_used( get_the_ID() ) ) {
 $more = 1;
 the_content();
 } else {
 $more = null;
 the_content( esc_html__( 'read more...', 'et_builder' ) );
 }
 } else {
 if ( has_excerpt() ) {
 the_excerpt();
 } else {
 truncate_post( 270 );
 }
 }
 } else if ( has_excerpt() ) {
 the_excerpt();
 }

 if ( 'on' !== $show_content ) {
 $more = 'on' == $show_more ? sprintf( ' <a href="%1$s" class="more-link" >%2$s</a>' , esc_url( get_permalink() ), esc_html__( 'read more', 'et_builder' ) ) : '';
 echo $more;
 }
 ?>
 <?php } // 'off' === $fullwidth || ! in_array( $post_format, array( 'link', 'audio', 'quote', 'gallery' ?>

 </article> <!-- .et_pb_post -->
 <?php
 } // endwhile

 if ( 'on' === $show_pagination && ! is_search() ) {
 echo '</div> <!-- .et_pb_posts -->';

 $container_is_closed = true;

 if ( function_exists( 'wp_pagenavi' ) ) {
 wp_pagenavi();
 } else {
 if ( et_is_builder_plugin_active() ) {
 include( ET_BUILDER_PLUGIN_DIR . 'includes/navigation.php' );
 } else {
 get_template_part( 'includes/navigation', 'index' );
 }
 }
 }

 wp_reset_query();
 } else {
 if ( et_is_builder_plugin_active() ) {
 include( ET_BUILDER_PLUGIN_DIR . 'includes/no-results.php' );
 } else {
 get_template_part( 'includes/no-results', 'index' );
 }
 }

 $posts = ob_get_contents();

 ob_end_clean();

 $class = " et_pb_module et_pb_bg_layout_{$background_layout}";

 $output = sprintf(
 '<div%5$s class="%1$s%3$s%6$s"%7$s>
 %2$s
 %4$s',
 ( 'on' === $fullwidth ? 'et_pb_posts' : 'et_pb_blog_grid clearfix' ),
 $posts,
 esc_attr( $class ),
 ( ! $container_is_closed ? '</div> <!-- .et_pb_posts -->' : '' ),
 ( '' !== $module_id ? sprintf( ' id="%1$s"', esc_attr( $module_id ) ) : '' ),
 ( '' !== $module_class ? sprintf( ' %1$s', esc_attr( $module_class ) ) : '' ),
 ( 'on' !== $fullwidth ? ' data-columns' : '' )
 );

 if ( 'on' !== $fullwidth )
 $output = sprintf( '<div class="et_pb_blog_grid_wrapper">%1$s</div>', $output );

 return $output;
 }
}
new DS_Custom_Module_Blog;

I usually use Andy Tran's child theme so I am just wondering if you are leaving something out or if there is something I should be changing? In any case I just can't get it to work, so I just wanted to know if you had the same result.