Random article on gridsby theme

Hello
Wordpress 4.4.2
Theme Gridsby
Modele page: home page.

i want to have a lot of random article in my home page but the code orderby=> rand doesn’t work correctly…..

if i write this code, i have a probleme:

Article Everything is good in the disorder, but link too…..

<?php else :

global $post;

// Set the photo length
if ( get_theme_mod( ‘photos_length’ ) ) :

if ( ‘option1’ == gridsby_sanitize_index_content( get_theme_mod( ‘gridsby_post_time_method’ ) ) ) :

// Set Ascending
$args = array( ‘post_type’ => ‘post’, ‘posts_per_page’ => get_theme_mod( ‘photos_length’, ’20’ ), ‘order’ => ‘ASC’, ‘tax_query’ =>
array(
array(
‘taxonomy’ => ‘post_format’,
‘field’ => ‘slug’,
‘terms’ => ‘post-format-image’,
)));

else :

// Set Descending
$args = array( ‘post_type’ => ‘post’, ‘posts_per_page’ => get_theme_mod( ‘photos_length’, ’20’ ), ‘tax_query’ =>
array(
array(
‘taxonomy’ => ‘post_format’,
‘field’ => ‘slug’,
‘terms’ => ‘post-format-image’,
)));

endif;

else :

if ( ‘option1’ == gridsby_sanitize_index_content( get_theme_mod( ‘gridsby_post_time_method’ ) ) ) :

// Set Ascending
$args = array( ‘post_type’ => ‘post’, ‘posts_per_page’ => -1, ‘order’ => ‘ASC’, ‘tax_query’ =>
array(
array(
‘taxonomy’ => ‘post_format’,
‘field’ => ‘slug’,
‘terms’ => ‘post-format-image’,
)));

else :

// Set Descending
$args = array( ‘post_type’ => ‘post’, ‘posts_per_page’ => -1, ‘tax_query’ =>
array(
array(
‘taxonomy’ => ‘post_format’,
‘field’ => ‘slug’,
‘terms’ => ‘post-format-image’,
)));

endif;

endif;

$myposts = get_posts( $args );
foreach( $myposts as $post ) : setup_postdata($post); ?>

<?php get_template_part( ‘content’, ‘pf-image’ ); // Post Format Image ?>

<?php endforeach; ?>

<?php endif; ?>