لا استطيع تعديل اي قالب

ParseError: syntax error, unexpected 'Fn' (T_FN), expecting identifier (T_STRING) or '{' in src/XF/Template/Compiler.php at line 8
Composer\Autoload\includeFile() in src/vendor/composer/ClassLoader.php at line 322
Composer\Autoload\ClassLoader->loadClass()
spl_autoload_call() in src/XF/App.php at line 1291
XF\App->XF\{closure}() in src/XF/Container.php at line 28
XF\Container->offsetGet() in src/XF/App.php at line 2969
XF\App->templateCompiler() in src/XF/Entity/Template.php at line 180
XF\Entity\Template->validateTemplateText() in src/XF/Entity/Template.php at line 166
XF\Entity\Template->verifyTemplate() in src/XF/Mvc/Entity/Entity.php at line 768
XF\Mvc\Entity\Entity->_verifyValueCustom() in src/XF/Mvc/Entity/Entity.php at line 613
XF\Mvc\Entity\Entity->set() in src/XF/Mvc/Entity/Entity.php at line 720
XF\Mvc\Entity\Entity->bulkSet() in src/XF/Mvc/FormAction.php at line 34
XF\Mvc\FormAction->XF\Mvc\{closure}() in src/XF/Mvc/FormAction.php at line 164
XF\Mvc\FormAction->run() in src/XF/Admin/Controller/Template.php at line 151
XF\Admin\Controller\Template->actionSave() in src/XF/Mvc/Dispatcher.php at line 321
XF\Mvc\Dispatcher->dispatchClass() in src/XF/Mvc/Dispatcher.php at line 244
XF\Mvc\Dispatcher->dispatchFromMatch() in src/XF/Mvc/Dispatcher.php at line 100
XF\Mvc\Dispatcher->dispatchLoop() in src/XF/Mvc/Dispatcher.php at line 50
XF\Mvc\Dispatcher->run() in src/XF/App.php at line 2177
XF\App->run() in src/XF.php at line 390
XF::runApp() in admin.php at line 13