WooCommerce: Out of stock notification issue for a product with low stock
<p>I have set stock for a product to <strong><code>1</code></strong>. But when I test this setting on front office, trying to buy it, I have this error message: </p>

<blockquote>
  <p>'Sorry, we do not have enough "product name" in stock to fulfill your order right now. Please try again in 60 minutes or edit your cart and try again. We apologise for any inconvenience caused.'</p>
</blockquote>

<p>I don't understand why I have this error, because there is <strong><code>1</code></strong> item in stock for this product. </p>

<p>How to get rid of this issue?</p>