title: Unexpected template string expression
body: <p>I learn from tutorial and want to make ProductScreen.js and Product.js and I became this warnings, what is the problem?</p>
  <p><strong>product.js</strong></p>
  <pre><code>import React from 'react'
  import Rating from './Rating';
  
  export default function Product(props) {
      const {product} = props;
  
      return (
          &lt;div key={product._id} className=&quot;card&quot;&gt;
          &lt;a href= '/product/${product._id}'&gt; // Line 9                  
              &lt;img className=&quot;medium&quot; src={product.image} alt={product.name} /&gt;
          &lt;/a&gt;
          &lt;div className=&quot;card-body&quot;&gt;
          &lt;a href='/product/${product._id}'&gt;  //Line 13
                  &lt;h2&gt;{product.name}&lt;/h2&gt;
              &lt;/a&gt;
             &lt;Rating 
             rating={product.rating} 
             numReviews={product.numReviews}
             &gt;&lt;/Rating&gt;
              &lt;div className=&quot;price&quot;&gt;{product.price}lv&lt;/div&gt;
          &lt;/div&gt;
      &lt;/div&gt;
      )
  }
  </code></pre>
  <p><a href="https://i.stack.imgur.com/mmLpP.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mmLpP.png" alt="enter image description here" /></a></p>