Error message

• Notice: Trying to get property 'id' of non-object in _print_sets() (line 321 of /home/miniset/miniset.net/helpers/some/sets_relations.php).
• Notice: Trying to get property 'title' of non-object in _print_sets() (line 322 of /home/miniset/miniset.net/helpers/some/sets_relations.php).
• Notice: Trying to get property 'state' of non-object in _print_sets() (line 323 of /home/miniset/miniset.net/helpers/some/sets_relations.php).
• Notice: Trying to get property 'state' of non-object in _print_sets() (line 323 of /home/miniset/miniset.net/helpers/some/sets_relations.php).
• Notice: Trying to get property 'id' of non-object in _print_sets() (line 323 of /home/miniset/miniset.net/helpers/some/sets_relations.php).
• Notice: Trying to get property 'id' of non-object in _print_sets() (line 321 of /home/miniset/miniset.net/helpers/some/sets_relations.php).
• Notice: Trying to get property 'title' of non-object in _print_sets() (line 322 of /home/miniset/miniset.net/helpers/some/sets_relations.php).
• Notice: Trying to get property 'state' of non-object in _print_sets() (line 323 of /home/miniset/miniset.net/helpers/some/sets_relations.php).
• Notice: Trying to get property 'state' of non-object in _print_sets() (line 323 of /home/miniset/miniset.net/helpers/some/sets_relations.php).
• Notice: Trying to get property 'id' of non-object in _print_sets() (line 323 of /home/miniset/miniset.net/helpers/some/sets_relations.php).