cambio en header

app/conection.php

@@ -38,7 +38,7 @@ try {
         </div>
         <?php
     }
-    echo json_encode($data);
+    // echo json_encode($data);
     // var_dump($data);
 } catch (PDOException $e) {
     echo 'Falló la conexión: ' . $e->getMessage();

app/inc/header.php

@@ -21,13 +21,13 @@
                 <a class="navbar-brand" href="/">inge.com</a>
                 <ul class="navbar-nav me-auto mb-2 mb-lg-0">
                     <li class="nav-item">
-                        <a class="nav-link active" aria-current="page" href="#">Home</a>
+                        <a class="nav-link active" aria-current="page" href="/">Home</a>
                     </li>
                     <li class="nav-item">
-                        <a class="nav-link" href="#">Link</a>
+                        <a class="nav-link" href="constantes.php">Variables</a>
                     </li>
                     <li class="nav-item">
-                        <a class="nav-link disabled" aria-disabled="true">Disabled</a>
+                        <a class="nav-link disabled" href="variables.php">Constantes</a>
                     </li>
                 </ul>
                 <form class="d-flex" role="search">