Warning: include_once(_inc/initialize.php): failed to open stream: No such file or directory in : on line 2

Warning: include_once(): Failed opening '_inc/initialize.php' for inclusion (include_path='.;C:\php\pear') in : on line 2

Fatal error: Uncaught Error: Call to a member function execute() on null in ::41
Stack trace:
#0 {main}
  thrown in : on line 41