Warning: Undefined array key "user_id" in /users/danielstruebig/www/Dart_software/check_new_messages.php on line 5

Fatal error: Uncaught mysqli_sql_exception: Unknown column 'friend_id' in 'field list' in /users/danielstruebig/www/Dart_software/check_new_messages.php:7 Stack trace: #0 /users/danielstruebig/www/Dart_software/check_new_messages.php(7): mysqli->prepare('SELECT friend_i...') #1 {main} thrown in /users/danielstruebig/www/Dart_software/check_new_messages.php on line 7