Underscore Undefined When Using Custom Theme

Hi,

I have excatly the same problem while adding the code below in my template.

If I remove the code, everything is working fine. Any idea?

<?php echo _e( "Goes well with...", "shiseido" ); ?><br/><br/>

		<?php
		$postperpage = 5;
		$paged = 1;
		$type = array('shiseido_products');
		$taxonomy = 'shiseido-category';

		$args=array(
			'post_type' => $type,
			'post_status' => 'publish',
			'paged' => $paged,
			'posts_per_page' => $postperpage,
			'ignore_sticky_posts'=> 1,
			'post__not_in' => array(get_the_id()),
			'tax_query' => array(
					array(
						'taxonomy' => $taxonomy,
						'field' => 'id',
						'terms' => array($in_cats),
						'operator' => 'IN'
					)
				)
		);

		$temp = $wp_query;
		$wp_query = null;
		$wp_query = new WP_Query($args);
		?>

		<?php if ( $wp_query->have_posts() ) { ?>
			<?php while ( $wp_query->have_posts() ) : $wp_query->the_post(); ?>
				<a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>">
					<?php $category = get_the_category_bytax($post->ID, 'shiseido-line'); echo $category[0]->cat_name; ?><br/>
					<?php the_title(); ?><br/>
					<?php
					$rows = get_field('shiseido_product_thumbnails' );
					$first_row = $rows[0];
					$first_row_image = $first_row['shiseido_product_main_thumbnail' ];
					$image = wp_get_attachment_image_src( $first_row_image, '200x200' );
					if ($image) { ?>
						<img width="<?php echo $image[1]; ?>" height="<?php echo $image[2]; ?>" src="<?php echo $image[0]; ?>" />
					<?php } ?>

				</a><br/>
			<?php endwhile; ?>
		<?php } ?>

Ok I found something, changing $wp_query to another name (for example I used $wp_query_related) made it working for me.