diff --git a/config/config.php b/config/config.php
index df11b31..ee778a9 100644
--- a/config/config.php
+++ b/config/config.php
@@ -62,29 +62,28 @@ function isInstallationCompleted() {
 function getConfigFromDB($key, $default = null) {
     static $configs = null;
     global $config_cache_cleared;
+
+    // Asegurar que la bandera exista y tenga valor booleano
+    if (!isset($config_cache_cleared)) {
+        $config_cache_cleared = false;
+    }
     
     if ($configs === null || $config_cache_cleared) {
         $config_cache_cleared = false;
+        $configs = [];
         
         if (isInstallationCompleted()) {
             try {
-                $pdo = new PDO(
-                    "mysql:host=" . DB_HOST . ";port=" . DB_PORT . ";dbname=" . DB_NAME . ";charset=" . DB_CHARSET,
-                    DB_USER,
-                    DB_PASS,
-                    [
-                        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-                        PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
-                        PDO::ATTR_EMULATE_PREPARES => false,
-                    ]
-                );
+                // Usar la función centralizada para crear la conexión
+                $pdo = createDbConnection();
                 
                 // Verificar si existe la tabla system_config
-                $tableExists = $pdo->query("SHOW TABLES LIKE 'system_config'")->rowCount() > 0;
+                $tableExistsStmt = $pdo->query("SHOW TABLES LIKE 'system_config'");
+                $tableExists = $tableExistsStmt && $tableExistsStmt->rowCount() > 0;
                 
                 if ($tableExists) {
-                    $stmt = $pdo->query("SELECT config_key, config_value FROM system_config WHERE config_key = " . $key);
-                    $configs = [];
+                    // Cargar todas las configuraciones en caché de una sola vez
+                    $stmt = $pdo->query("SELECT config_key, config_value FROM system_config");
                     while ($row = $stmt->fetch()) {
                         $configs[$row['config_key']] = $row['config_value'];
                     }