Error message from hypeJunction Lists

By Reuven

From time to time I receive an error message in the comment fields:

Strict Standards: Static function hypeJunction\Lists\EntityList::getEntityType() should not be abstract in /home/hiranyas/public_html/ram.li/ram/mod/hypeLists/classes/hypeJunction/Lists/EntityList.php on line 559

Strict Standards: Static function hypeJunction\Lists\EntityList::addSortQuery() should not be abstract in /home/hiranyas/public_html/ram.li/ram/mod/hypeLists/classes/hypeJunction/Lists/EntityList.php on line 569

Strict Standards: Static function hypeJunction\Lists\EntityList::addSearchQuery() should not be abstract in /home/hiranyas/public_html/ram.li/ram/mod/hypeLists/classes/hypeJunction/Lists/EntityList.php on line 579

Strict Standards: Static function hypeJunction\Lists\EntityList::addFilterQuery() should not be abstract in /home/hiranyas/public_html/ram.li/ram/mod/hypeLists/classes/hypeJunction/Lists/EntityList.php on line 589

Please guide me how to fix it.

Thanks a lot.