public function add Solution ()
{
    $ userID = Session :: get ('id');
    $ idPracyDomowej = $ _POST ['homework_id'];
    $ content = $ _POST ['content'];
    $ transfer_name = date ('Y-m-d H: i: s');
    $ database = new Database ();
    $ BazaDanych-> connect ();
    $ query = 'INSERT INTO `solution` (
      `user_id`,` homework_id`, `content`,` upload_date`
    ) VALUES (?,?,?,?) ';
    $ query result = $ database-> query ($ query,
        [$ userID, $ homeID, $ content,
       $ DataPrzeslania]);
    if ($ inquiry result> 0) {
      Message :: success ('Solution successfully added!');
      header ('Location:'. Settings :: get ('appURL'). 'my-works');
    } else {
      Message :: error ('An error occurred while adding
      solutions!');
      header ('Location:'. Settings :: get ('appURL'). 'add-
      solution-form '); //
    }
}
Undefined index: work_homes_id in C: \ xampp \ htdocs \ suu \ Classes \ PracaDomowa.php on line 150
Undefined index: tresc in C: \ xampp \ htdocs \ suu \ Classes \ PracaDomowa.php on line 152
What is going on? Where is the mistake
 
    