Edit

[EDIT] FILE: sidebar.php

<?php

if(!isset($_SESSION['alogin'])) {
    header("location: login.php");
  } 
?>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Synenergy</title>

<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Source+Sans+Pro:300,400,400i,700&display=fallback">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.3.0/css/all.min.css"/>
  <link rel="stylesheet" href="https://code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css">
    <link rel="stylesheet" href="https://cdn.datatables.net/1.11.5/css/jquery.dataTables.min.css">

<a class="nav-link" data-toggle="dropdown" href="logout.php">
          <img src="img/logout-bg.png" alt="" style="width: 40px; height: 40px; object-fit: cover; margin-top: -8px;">logout 
        </a>

<div class="dropdown-menu dropdown-menu-lg pb-2 dropdown-menu-right">
          <span class="dropdown-item dropdown-header comp-name">LIPIKA MEHANDI</span>
          <div class="dropdown-divider"></div>
         
          <div class="dropdown-divider"></div>
                </div>
      </li>
    </ul>
  </nav>

<aside class="main-sidebar sidebar-dark-primary elevation-4">
    
    <a href="index.php" class="brand-link">
      <img src="img/profile.png" alt="Profile" width="240px"  class="bg-white">
     
    </a>

<div class="sidebar">  
      
      <nav class="mt-2">
        <ul class="nav nav-pills nav-sidebar flex-column" data-widget="treeview" role="menu" data-accordion="false">
          <li class="nav-item">
            <a href="index.php" class="nav-link">
              <i class="nav-icon fas fa-tachometer-alt"></i>
              <p>
                Dashboard
              </p>
            </a>
          </li>

<li class="nav-item">
            <a href="add_category.php" class="nav-link">
            <i class="fa-solid fa-file-pen"></i>
              <p>
                Create Category
              </p>
            </a>
          </li>

<li class="nav-item">
            <a href="add-product.php" class="nav-link">
            <i class="fa-solid fa-cart-shopping"></i>
              <p>
                Add Product
              </p>
            </a>
          </li>
          
          <li class="nav-item">
            <a href="manage_product.php" class="nav-link">
            <i class="fa-solid fa-square-pen"></i>
              <p>
                Manage Product
              </p>
            </a>
          </li>

</ul>
      </nav>
      
    </div>
    
  </aside>

CANCEL