come faccio a risolvere questo errore Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[42S22]: Column not found: 1054 Unknown column 'user_id' in 'where clause'' in C:\xampp\htdocs\user_profile.php:242 Stack trace: #0 C:\xampp\htdocs\user_profile.php(242): PDOStatement->execute(Array) #1 {main} thrown in C:\xampp\htdocs\user_profile.php on line 242