(GS) Server List 3.2.1

ErrorException: Class IPS\serverlist\Library could not be loaded. Ensure it has been properly prefixed with an underscore and is in the correct namespace. (256)
#0 [internal function]: IPS\IPS::errorHandler(256, 'Class IPS\\serve...', 'W:\\domains\\loca...', 310, Array)
#1 W:\domains\localhost\forum\init.php(310): trigger_error('Class IPS\\serve...', 256)
#2 [internal function]: IPS\IPS::autoloader('IPS\\serverlist\\...')
#3 W:\domains\localhost\forum\applications\serverlist\modules\admin\serverlist\manage.php(20): spl_autoload_call('IPS\\serverlist\\...')
#4 W:\domains\localhost\forum\system\Dispatcher\Dispatcher.php(139): IPS\serverlist\modules\admin\serverlist\_manage->__construct()
#5 W:\domains\localhost\forum\admin\index.php(14): IPS\_Dispatcher->run()
#6 {main}