Invalid arguments passed (Help! )

Hi im using WordPress 4.0 for my Company’s Website, and using the Codeus theme.

I came across the error: Warning: implode(): Invalid arguments passed in /home4/adriana/public_html/wp-content/themes/codeus/single-codeus_portfolios.php on line 98 when i preview it.

the Code from Single-codeus_portfolio.php is as follows : –

<?php
/**
 * The single portfolio template.
 *
 * @package Codeus
 */

	global $post;

	$quickfinder_position = get_post_meta($post->ID, 'codeus_quickfinder_position', TRUE) ? get_post_meta($post->ID, 'codeus_quickfinder_position', TRUE) : 0;
	$quickfinder_select = get_post_meta($post->ID, 'codeus_quickfinder_select', TRUE) ? get_post_meta($post->ID, 'codeus_quickfinder_select', TRUE) : array();

	$portfolio_position = get_post_meta($post->ID, 'codeus_portfolio_position', TRUE) ? get_post_meta($post->ID, 'codeus_portfolio_position', TRUE) : 0;
	$portfolio_filter = get_post_meta($post->ID, 'codeus_portfolio_filter', TRUE) ? get_post_meta($post->ID, 'codeus_portfolio_filter', TRUE) : 0;
	$portfolio_select = get_post_meta($post->ID, 'codeus_portfolio_select', TRUE) ? get_post_meta($post->ID, 'codeus_portfolio_select', TRUE) : '';
	$portfolio_size = get_post_meta($post->ID, 'codeus_portfolio_size', TRUE) ? get_post_meta($post->ID, 'codeus_portfolio_size', TRUE) : 'small';
	$portfolio_count = get_post_meta($post->ID, 'codeus_portfolio_count', TRUE) && get_post_meta($post->ID, 'codeus_portfolio_count', TRUE) > 0 ? get_post_meta($post->ID, 'codeus_portfolio_count', TRUE) : 6;
	$portfolio_title = get_post_meta($post->ID, 'codeus_portfolio_title', TRUE) ? get_post_meta($post->ID, 'codeus_portfolio_title', TRUE) : '';

	$gallery_position = get_post_meta($post->ID, 'codeus_gallery_position', TRUE) ? get_post_meta($post->ID, 'codeus_gallery_position', TRUE) : 0;
	$gallery_select = get_post_meta($post->ID, 'codeus_gallery_select', TRUE) ? get_post_meta($post->ID, 'codeus_gallery_select', TRUE) : 0;
	$gallery_size = get_post_meta($post->ID, 'codeus_gallery_size', TRUE) ? get_post_meta($post->ID, 'codeus_gallery_size', TRUE) : 0;
	$gallery_style = get_post_meta($post->ID, 'codeus_gallery_style', TRUE) ? get_post_meta($post->ID, 'codeus_gallery_style', TRUE) : 'no-style';

	$page_sidebar = get_post_meta($post->ID, '_sidebars_widgets', true);
	$has_sidebar = false;
	if(is_array($page_sidebar) && isset($page_sidebar['sidebar']) && count($page_sidebar['sidebar'])) {
		$has_sidebar = true;
	}

	get_header();

?>

		<?php if($quickfinder_position == 1) : ?>
			<div class="block quickfinder">
				<div class="central-wrapper clearfix">
					<?php codeus_quickfinder_block($quickfinder_select); ?>
				</div>
			</div>
		<?php endif; ?>

		<?php if($portfolio_position == 1) : ?>
			<div class="block portfolio">
					<?php codeus_portfolio_block(implode(',',$portfolio_select), $portfolio_title); ?>
			</div>
		<?php endif; ?>

	</div><!-- wrap end -->

	<!-- wrap start --><div class="content-wrap">

		<?php if(have_posts()) : the_post(); ?>

			<div id="main">
				<div class="central-wrapper clearfix">
					<div class="fullwidth">
						<?php if($gallery_select && $gallery_position == 1 && $gallery_size != 1) : ?>
								<div class="top-el"><?php codeus_gallery($gallery_select, $gallery_size, $gallery_style); ?></div>
						<?php endif; ?>
					</div>

					<?php if($has_sidebar){ echo '<div class="panel clearfix">'; } ?>

					<div id="center" class="<?php if($has_sidebar) {echo 'center clearfix';} else {echo 'fullwidth';} ?>">

						<div id="content">
							<?php if($gallery_select && $gallery_position == 1 && $gallery_size == 1) : ?>
								<div class="top-el"><?php codeus_gallery($gallery_select, $gallery_size, $gallery_style); ?></div>
							<?php endif; ?>

							<div class="inner">
								<?php the_content(); ?>
								<?php wp_link_pages( array( 'before' => '<div class="pagination"><div class="page-links-title">' . __( 'Pages:', 'codeus' ) . '</div>', 'after' => '</div>', 'link_before' => '<span>', 'link_after' => '</span>' ) ); ?>

								<div class="post-tags-block clearfix">
									<?php if(codeus_get_option('show_social_icons')) { codeus_socials_sharing(); } ?>
									<div class="post-tags">
										<?php echo get_the_date(); ?>
										<?php
											$terms = get_the_terms($post->ID, 'portfoliosets');
											if($terms && !is_wp_error($terms)) {
												$list = array();
												foreach($terms as $term) {
													$list[] = $term->name;
												}
												echo '<span class="sep">|</span> <span class="tags-links">'.join(' <span class="sep">|</span> ', $list).'</span>';
											}
										?>
									</div>
								</div>

								<?php if($quickfinder_position == 2) : ?>
									<?php quickfinder($quickfinder_select); ?>
								<?php endif; ?>

								<?php if($portfolio_position == 2) : ?>
									<?php codeus_portfolio(implode(',',$portfolio_select), $portfolio_size, $portfolio_count, $portfolio_filter, $portfolio_title); ?>
								<?php endif; ?>

								<?php if($gallery_select && $gallery_position == 3 && $gallery_size == 1) : ?>
									<div class="bottom-el"><?php codeus_gallery($gallery_select, $gallery_size, $gallery_style); ?></div>
								<?php endif; ?>

							</div>
						</div><!-- #content -->
					</div><!-- #center -->
					<?php if($has_sidebar){ get_sidebar(); } ?>
					<?php if($has_sidebar){ echo '</div><!-- .panel -->'; } ?>

					<?php if($gallery_select && $gallery_position == 3 && $gallery_size != 1) : ?>
						<div class="fullwidth">
							<div class="bottom-el"><?php codeus_gallery($gallery_select, $gallery_size, $gallery_style); ?></div>
						</div>
					<?php endif; ?>

				</div><!-- .central-wrapper -->
			</div><!-- #main -->
		<?php endif; ?>

	</div><!-- wrap end -->

	<!-- wrap start --><div class="block-wrap">

		<?php if($quickfinder_position == 3) : ?>
			<div class="block quickfinder">
				<div class="central-wrapper clearfix">
					<?php codeus_quickfinder_block($quickfinder_select); ?>
				</div>
			</div>
		<?php endif; ?>

		<?php if($portfolio_position == 3) : ?>
			<div class="block portfolio">
					<?php codeus_portfolio_block(implode(',',$portfolio_select), $portfolio_title); ?>
			</div>
		<?php endif; ?>

	</div><!-- wrap end -->

<?php get_footer(); ?>

Whats the issue, if you could help me please i would be grateful