How to collapsed nav-treeview when I click the submenu in AdminLTE 3.0?

As you can see in the GIF when I click the submenu it no longer collapses. What I want is when I click the submenu it will collapse and will not automatically close when I click the page

<li class="nav-item">
            <a href="#" class="nav-link <?= $page == 'patients.php' || $page == 'medical_history.php'? 'active':''?>">
              <i class="nav-icon fa fa-users-medical"></i>
              <p>Patients</p>
              <i class="fas fa-angle-left right"></i>
            </a>
            <ul class="nav nav-treeview <?= $page == 'patients.php' || $page == 'medical_history.php' ? 'show':''?>">
              <li class="nav-item">
                <a href="patients.php" class="nav-link <?= $page == 'patients.php' ? 'active':''?>">
                  <i class="far fa-circle nav-icon"></i>
                  <p>Patient List</p>
                </a>
              </li>
              <li class="nav-item">
                <a href="medical_history.php" class="nav-link <?= $page == 'medical_history.php' ? 'active':''?>">
                  <i class="far fa-circle nav-icon"></i>
                  <p>Medical History</p>
                </a>
              </li>
            </ul>
          </li>

Answer

Updated…

I’ve updated and provided the code you need… just copy and paste this code in the relevant section of your file. I’m sure this will work for you : )

<li class="nav-item <?= $page == 'patients.php' || $page == 'medical_history.php' ? 'menu-open' : '' ?>">
  <a href="#" class="nav-link <?= $page == 'patients.php' || $page == 'medical_history.php' ? 'active' : '' ?>">
    <i class="nav-icon fa fa-users-medical"></i>
    <p>Patients</p>
    <i class="fas fa-angle-left right"></i>
  </a>
  <ul class="nav nav-treeview">
    <li class="nav-item">
      <a href="patients.php" class="nav-link <?= $page == 'patients.php' ? 'active' : '' ?>">
        <i class="far fa-circle nav-icon"></i>
        <p>Patient List</p>
      </a>
    </li>
    <li class="nav-item">
      <a href="medical_history.php" class="nav-link <?= $page == 'medical_history.php' ? 'active' : '' ?>">
        <i class="far fa-circle nav-icon"></i>
        <p>Medical History</p>
      </a>
    </li>
  </ul>
</li>

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Answer