Fatal error: Uncaught Error: Class "OC\Files\Search\QueryOptimizer\QueryOptimizerStep" not found in /home/tzuovhm/tzuovhm/lib_/private/Files/Search/QueryOptimizer/FlattenNestedBool.php:13 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/lib_/private/Files/Search/QueryOptimizer/FlattenNestedBool.php on line 13