插件 DragonByte eCommerce 2.3.4

于是简体中文呢？没有可导入的语言 xml，安装完也只有英文版。

安装时出现错误提示:

Error: Class 'Ibericode\Vat\Rates' not found in src/addons/DBTech/eCommerce/Repository/Country.php at line 229
DBTech\eCommerce\Repository\Country->updateVatRates() in src/addons/DBTech/eCommerce/Install/InstallDataTrait.php at line 1198
DBTech\eCommerce\Setup->runPostInstallActions() in src/addons/DBTech/eCommerce/Setup.php at line 134
DBTech\eCommerce\Setup->postInstall() in src/XF/AddOn/AddOn.php at line 523
XF\AddOn\AddOn->postInstall() in src/XF/Admin/Controller/AddOn.php at line 707
XF\Admin\Controller\AddOn->actionFinalize() 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

请问管理员如何解决这个问题啊!!!!