Bootstrap Div part error. I have a scrollbar when loaded in Chrome

Whether this piece of code is right? Bootstrap Div part error. I have a scrollbar when loaded in HTML. Also I need to check if the row div can be inserted before sidebar-container element that is used Bootstrap4. I'm not sure on this part. I also feel there could be some errors that needs to checked.

Can someone clear this part here?

     <div class="row">
<!-- Sidebar -->
     <div id="sidebar-container" class="sidebar-expanded .d-block"><!-- d-block--visible on all devices-->
    <!-- Bootstrap List Group -->
    <ul class="list-group">
        <!-- Logo -->
        <li class="bg-dark list-group-item d-flex justify-content-center">
           <img src="telekom-panda-navi.svg"/>     
        </li>
        <!-- dots -->
        <li class="size bg-dark list-group-item d-flex justify-content-center">  
                  <img src="menu_breif.svg"/>  
        </li> <!-- End dots -->
        
              <!-- Home -->
        <li class="size bg-dark list-group-item d-flex justify-content-center">  
                  <img src="menu_home.svg"/>  
        </li><!--End Home -->
              <!--Menu -->
        <li class="size bg-dark list-group-item d-flex justify-content-center">  
                  <img src="menu_new_quote.svg"/>  
        </li><!--End menu -->

              
        <!--menu_logout -->

        <a href="#" class="size bg-dark list-group-item list-group-item-action">
            <div class="d-flex w-100 justify-content-center">
                 <img src="menu_logout.svg">
            </div>
        </a>
        <!--End menu_logout -->
         <!--menu_left -->
        <a href="#" data-toggle="sidebar-colapse" class="size bg-dark list-group-item list-group-item-action d-flex align-items-center">
            <div class="d-flex w-100 justify-content-center">
        
                <img src="menu_left.svg">
            </div>
        </a>
        <!--END menu_left -->
          
    </ul><!-- List Group END-->
</div><!-- sidebar-container END -->