Unhandled Error!

Trying to get property of non-object

Document product:summary
Document type CMS partial
Line 41
Exception class Cms_ExecutionException

Code Highlight

			<? if ($manufacturer): ?>
				<p class="manufacturer" itemprop="brand"><?= h($manufacturer->name) ?></p>
			<? endif ?>
			<h1 class="name" itemprop="name"><?= $product->product_type()->name ?> <?= h($product->name) ?></h1>
			<meta itemprop="identifier" content="sku:<?= h($product->sku) ?>" />
			<? if ($schema_category = $product->category_list): ?>
				<meta itemprop="category" content="<?= $schema_category[0]->name ?>" />
			<? endif ?>
 
			<? $this->render_partial('product:price') ?>
		</div>
	</div>
 
# Document Type
3 product:summary CMS partial
2 product CMS partial
1 Шёлковые запонки фиолетово-сиреневые с белым 88 By Kavaler CMS page