Cannot load alecaddd_cpt error

[ori1989]

I've got an issue On lesson 31 - How to Edit a Custom Post Type.
I created the form with the edit button as shown:

echo test:

<?php settings_errors(); if(isset($_POST['edit'])) { echo $_POST['post_type']; } ?>

The edit form:

                            <form action="" method="post" class="inline-block">
                                
                                <input type="hidden" name="post_type" value="<?= $option['post_type'] ?>">

                                <?php
                                    submit_button( 'Edit', 'primary small edit', 'edit', false); 
                                ?>
                            </form>

When I click on the edit button, I get this error: