Page navi is not working in custom taxonomy template?

I have a custom taxonomy template taxonomy-event-category.php and i
have added following code for pagination but it does not work.

<?php
$current_term = single_term_title("", false);
$cat_id = get_cat_ID('My Category');
$paged = ( get_query_var( 'paged' ) ) ? get_query_var( 'paged' ) : 1;

$args=array(
    'post_type' => 'event',
    'post_status' => 'publish',
    'posts_per_page' => 1,
    'paged'=>$paged,

    'caller_get_posts'=> 1,
    'tax_query' => array(
        array(
            'taxonomy' => 'event-categories',
            'field'    => 'slug',
            'terms'    => $current_term,

        ),
    ),
);
$new = new WP_Query($args);

while( $new->have_posts() ):  $new->the_post();

    /* OUTPUT HERE */
endwhile;

if ( function_exists( 'wp_pagenavi' ) ) {
    wp_pagenavi( array( 'query' => $new ) );

}

wp_reset_postdata();
?>

whenever i click on the next page or second page getting me 404
page not found error.

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Anyone have idea about how pagnavi work in custom taxonomy template.