Error.
  <div class="container">
<div class=" project row py-5">
  <div class="work col-12">
    <div>
      <div class="flex-center">
        <a class="navigation" href="/projects.php">Back to projects</a>
        </div>
      <img src="./assets/img/work/" />
    </div>
  </div>
  <div class="row py-7 mx-1">
  <div class="col-4">
    <div class="d-flex align-items-center h-100">
    <div class="d-block">
      <div class="bold red mb-4">
              </div>
  <p class="project-text">
    Category: <br />
    Year:   </p>
    </div>
      </div>
  </div>
  <div class="col-8">

    <p>
          </p>
  </div>
  </div>
<div class="flex-space-between mx-1 mt-5">
<a class="navigation" href="/project.php?id=30"><span class="material-icons arrow">
chevron_left
</span><span class="text">Previous project</span></a>
<a class="navigation" href="/projects.php">Back to projects</a>
<a class="navigation" href="/project.php?id=32"><span class="text">Next project</span><span class="material-icons arrow">
chevron_right
</span></a>
</div>

</div>
  </div>