Error: Class 'XMLWriter' not found (0)

[DoorMadeEasy]

im trying to rebuild the sitemap so i try to run it  manually and i receive this error  

 

Error: Class 'XMLWriter' not found (0)
#0 /home/mysite001/public_html/applications/cms/extensions/core/Sitemap/Databases.php(233): IPS\_Sitemap->buildSitemapFile('1_sitemap_datab...', Array)
#1 /home/mysite001/public_html/applications/core/extensions/core/Queue/RebuildSitemap.php(105): IPS\cms\extensions\core\Sitemap\_Databases->generateSitemap('1_sitemap_datab...', Object(IPS\Sitemap))
#2 /home/mysite001/public_html/system/Task/Task.php(47): IPS\core\extensions\core\Queue\_RebuildSitemap->run(Array, 0)
#3 /home/mysite001/public_html/applications/core/modules/admin/system/background.php(87): IPS\_Task::runQueue()
#4 /home/mysite001/public_html/system/Helpers/MultipleRedirect/MultipleRedirect.php(92): IPS\core\modules\admin\system\_background->IPS\core\modules\admin\system\{closure}(Array)
#5 /home/mysite001/public_html/applications/core/modules/admin/system/background.php(139): IPS\Helpers\_MultipleRedirect->__construct(Object(IPS\Http\Url\Internal), Object(Closure), Object(Closure))
#6 /home/mysite001/public_html/system/Dispatcher/Controller.php(90): IPS\core\modules\admin\system\_background->process()
#7 /home/mysite001/public_html/applications/core/modules/admin/system/background.php(42): IPS\Dispatcher\_Controller->execute()
#8 /home/mysite001/public_html/system/Dispatcher/Dispatcher.php(152): IPS\core\modules\admin\system\_background->execute()
#9 /home/mysite001/public_html/admin/index.php(14): IPS\_Dispatcher->run()
#10 {main}

 any idea ?

[Nathan Explosion]

Check your PHP configuration and ensure that the XMLWriter PHP extension has been enabled.

[DoorMadeEasy]

thankyou its work