Fatal error: Uncaught Exception: Could not find class SV\StandardLib\XF\Template\TemplaterXF21Patch when attempting to extend XF\Template\Templater in /var/www/html/src/XF/Extension.php:176 Stack trace: #0 /var/www/html/src/XF/App.php(3004): XF\Extension->extendClass('...', NULL) #1 /var/www/html/src/XF/App.php(1949): XF\App->extendClass('...') #2 /var/www/html/src/XF/App.php(1397): XF\App->setupTemplaterObject(Object(XF\Container), '...') #3 /var/www/html/src/XF/Container.php(31): XF\App->XF\{closure}(Object(XF\Container)) #4 /var/www/html/src/XF/App.php(3380): XF\Container->offsetGet('...') #5 /var/www/html/src/XF/Pub/App.php(440): XF\App->templater() #6 /var/www/html/src/XF/Mvc/Dispatcher.php(397): XF\Pub\App->preRender(Object(XF\Mvc\Reply\View), '...') #7 /var/www/html/src/XF/Mvc/Dispatcher.php(60): XF\Mvc\Dispatcher->render(Object(XF\Mvc\Reply\View), '...') #8 /var/www/html/src/XF/App.php(2483): XF\Mvc\Dispatcher->run() #9 /var/www/html/src/XF.php(524): XF\App->run() #10 /var/www/html/index.php(20): XF::runApp('...') #11 {main} thrown in /var/www/html/src/XF/Extension.php on line 176