category field errors with php 8
Following errors appear in the add entry form (front and back-end) and search page:
Warning: SPField_Category::reorder(): Argument #1 (closed) ($from) must be passed by reference, value given in /home/sikorasobipro/test2.sikora.sobipro.eu/components/com_sobipro/opt/fields/category.php on line 549
Warning: SPField_Category::reorder(): Argument #2 (closed) ($to) must be passed by reference, value given in /home/sikorasobipro/test2.sikora.sobipro.eu/components/com_sobipro/opt/fields/category.php on line 549
Deprecated: usort(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /home/sikorasobipro/test2.sikora.sobipro.eu/components/com_sobipro/opt/fields/category.php on line 549
They appear with all of the methods