Why in this code, the error says that role is an undefined index, but the role has been set to an index type index in my database

Question

//If it is an admin user, update the role in the user information user_info in the current session for page call

if (Session::get('user_info.name') == 'admin') {

          Session::set('user_info.role', $data['role']);

      }

Answer 1

Just print $data to see if there is any