Extra space before comma in terms

themes/hestia/inc/compatability/woocommerce/functions.php

The issue close to the line 260 where extra space icluded for no reason.

echo ' , ';

if ( $nb_of_cat !== 0 ) {
 echo '<h6 class="category">';
 foreach ( $product_categories as $product_category ) {
  if ( $index < $nb_of_cat || $nb_of_cat < 0 ) {
   $product_cat_id   = $product_category->term_id;
   $product_cat_name = $product_category->name;
   if ( ! empty( $product_cat_id ) && ! empty( $product_cat_name ) ) {
    if ( $i ) {
     echo ' , ';
    }
    echo '<a href="' . esc_url( get_term_link( $product_cat_id, 'product_cat' ) ) . '">' . esc_html( $product_cat_name ) . '</a>';
    $i = true;
   }
   $index ++;
  }
 }
 echo '</h6>';
}

Please to fix