replaced some console.errors with logger

backend/routes/users.js

@@ -269,7 +269,7 @@ router.put('/profile', authenticateToken, async (req, res, next) => {
 
     res.json(updatedUser);
   } catch (error) {
-    console.error('Profile update error:', error);
+    logger.error('Profile update error', { error });
     next(error);
   }
 });