mage-eventpress/templates/single/organizer.php

<p>
<?php 
echo mep_get_option('mep_by_text', 'label_setting_sec') ? mep_get_option('mep_by_text', 'label_setting_sec') : esc_html__('By:','mage-eventpress'); 	
$count_term = sizeof($org);
$count = 1;
if( $count_term > 1){
foreach ($org as $_org) {
?>
	<a href="<?php  echo get_term_link( $_org->term_id, 'mep_org' );  ?>"><?php  echo esc_html($_org->name); if($count_term == $count){ }else{ echo ', '; } ?></a>
<?php
$count++;
}
}else{
    ?>    
    <a href="<?php  echo get_term_link( $org[0]->term_id, 'mep_org' );  ?>"><?php  echo esc_html($org[0]->name); ?></a>
    <?php } ?>
</p>