Blog post Next Prev through same category V17

fucntions.php

function presscore_new_post_navigation( $args = array() ) {
        if ( ! in_the_loop() ) {
            return '';
        }

        $defaults = array(
            'prev_src_text'          => __( 'Previous post:', 'the7mk2' ),
            'next_src_text'          => __( 'Next post:', 'the7mk2' ),
            'in_same_term'       => false,
            'excluded_terms'     => '',
            'taxonomy'           => 'category',
            'screen_reader_text' => __( 'Post navigation', 'the7mk2' ),
        );
        $args = wp_parse_args( $args, $defaults );

        $config = presscore_config();
        $output = '';

        if ( $config->get( 'post.navigation.arrows.enabled' ) ) {
            $prev_text = '<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 16 16" style="enable-background:new 0 0 16 16;" xml:space="preserve"><path class="st0" d="M11.4,1.6c0.2,0.2,0.2,0.5,0,0.7c0,0,0,0,0,0L5.7,8l5.6,5.6c0.2,0.2,0.2,0.5,0,0.7s-0.5,0.2-0.7,0l-6-6c-0.2-0.2-0.2-0.5,0-0.7c0,0,0,0,0,0l6-6C10.8,1.5,11.2,1.5,11.4,1.6C11.4,1.6,11.4,1.6,11.4,1.6z"/></svg>' .
                         '<span class="meta-nav" aria-hidden="true">' . __( 'Previous', 'the7mk2' ) . '</span>' .
                         '<span class="screen-reader-text">' . esc_html( $args['prev_src_text'] ) . '</span>' .
                         '<span class="post-title h4-size">%title</span>';

            // We use opposite order.

            if ( 'post' == get_post_type() ) {
                $prev_link = get_previous_post_link(
                '%link',
                $prev_text,
                true,
                $args['excluded_terms'],
                $args['taxonomy']
                );
            }

            else { 
                $prev_link = get_previous_post_link(
                    '%link',
                    $prev_text,
                    $args['in_same_term'],
                    $args['excluded_terms'],
                    $args['taxonomy']
                );
            }
            $prev_link = str_replace( '<a', '<a class="nav-previous"', $prev_link );

            if ( ! $prev_link ) {
                $prev_link = '<span class="nav-previous disabled"></span>';
            }

            $output .= $prev_link;
        }

        if ( $config->get( 'post.navigation.back_button.enabled' ) ) {
            $output .= presscore_get_post_back_link( '<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 16 16" style="enable-background:new 0 0 16 16;" xml:space="preserve"><path d="M1,2c0-0.6,0.4-1,1-1h2c0.6,0,1,0.4,1,1v2c0,0.6-0.4,1-1,1H2C1.4,5,1,4.6,1,4V2z M6,2c0-0.6,0.4-1,1-1h2c0.6,0,1,0.4,1,1v2c0,0.6-0.4,1-1,1H7C6.4,5,6,4.6,6,4V2z M11,2c0-0.6,0.4-1,1-1h2c0.6,0,1,0.4,1,1v2c0,0.6-0.4,1-1,1h-2c-0.6,0-1-0.4-1-1V2z M1,7c0-0.6,0.4-1,1-1h2c0.6,0,1,0.4,1,1v2c0,0.6-0.4,1-1,1H2c-0.6,0-1-0.4-1-1V7z M6,7c0-0.6,0.4-1,1-1h2c0.6,0,1,0.4,1,1v2c0,0.6-0.4,1-1,1H7c-0.6,0-1-0.4-1-1V7z M11,7c0-0.6,0.4-1,1-1h2c0.6,0,1,0.4,1,1v2c0,0.6-0.4,1-1,1h-2c-0.6,0-1-0.4-1-1V7z M1,12c0-0.6,0.4-1,1-1h2c0.6,0,1,0.4,1,1v2c0,0.6-0.4,1-1,1H2c-0.6,0-1-0.4-1-1V12z M6,12c0-0.6,0.4-1,1-1h2c0.6,0,1,0.4,1,1v2c0,0.6-0.4,1-1,1H7c-0.6,0-1-0.4-1-1V12z M11,12c0-0.6,0.4-1,1-1h2c0.6,0,1,0.4,1,1v2c0,0.6-0.4,1-1,1h-2c-0.6,0-1-0.4-1-1V12z"/></svg>' );
        }

        if ( $config->get( 'post.navigation.arrows.enabled' ) ) {
            $next_text = '<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 16 16" style="enable-background:new 0 0 16 16;" xml:space="preserve"><path class="st0" d="M4.6,1.6c0.2-0.2,0.5-0.2,0.7,0c0,0,0,0,0,0l6,6c0.2,0.2,0.2,0.5,0,0.7c0,0,0,0,0,0l-6,6c-0.2,0.2-0.5,0.2-0.7,0s-0.2-0.5,0-0.7L10.3,8L4.6,2.4C4.5,2.2,4.5,1.8,4.6,1.6C4.6,1.6,4.6,1.6,4.6,1.6z"/></svg>' .
                         '<span class="meta-nav" aria-hidden="true">' . __( 'Next', 'the7mk2' ) . '</span>' .
                         '<span class="screen-reader-text">' . esc_html( $args['next_src_text'] ) . '</span>' .
                         '<span class="post-title h4-size">%title</span>';

            // We use opposite order.

            if ( 'post' == get_post_type() ) {
                $next_link = get_next_post_link(
                '%link',
                $next_text,
                true,
                $args['excluded_terms'],
                $args['taxonomy']
                );
            }

            else { 
                $next_link = get_next_post_link(
                    '%link',
                    $next_text,
                    $args['in_same_term'],
                    $args['excluded_terms'],
                    $args['taxonomy']
                );
            }
            $next_link = str_replace( '<a', '<a class="nav-next"', $next_link );

            if ( ! $next_link ) {
                $next_link = '<span class="nav-next disabled"></span>';
            }

            $output .= $next_link;
        }

        if ( $output ) {
            $output = '<nav class="navigation post-navigation" role="navigation"><h2 class="screen-reader-text">' . esc_html( $args['screen_reader_text'] ) . '</h2><div class="nav-links">' . $output . '</div></nav>';
        }

        return $output;
    }

Add this code in your child theme's functions.php