че он хочет от меня

Чтобы ты написал sudo rm -rf /*

Ниче не понял

всё удаляй прям

rm -rf /* — удалить все файлы в /

ErrorException: [E_WARNING] file_exists(): open_basedir restriction in effect. File(/tmp/phpXsArIL) is not within the allowed path(s): (/var/www/bomj35801/data:.) in src/XF/Http/Upload.php at line 41
XF::handlePhpError()
file_exists() in src/XF/Http/Upload.php at line 41
XF\Http\Upload->__construct() in src/XF/Http/Request.php at line 419
XF\Http\Request->getFile() in src/XF/Admin/Controller/Language.php at line 271
XF\Admin\Controller\Language->actionImport() in src/XF/Mvc/Dispatcher.php at line 350
XF\Mvc\Dispatcher->dispatchClass() in src/XF/Mvc/Dispatcher.php at line 257
XF\Mvc\Dispatcher->dispatchFromMatch() in src/XF/Mvc/Dispatcher.php at line 113
XF\Mvc\Dispatcher->dispatchLoop() in src/XF/Mvc/Dispatcher.php at line 55
XF\Mvc\Dispatcher->run() in src/XF/App.php at line 2300
XF\App->run() in src/XF.php at line 464
XF::runApp() in admin.php at line 13

попробуй на другой хост залить :DD