[Bug] Correctly construct Magento\Framework\Phrase

Author: punkstar

app/code/Magento/Ui/Controller/Adminhtml/Index/Render.php

@@ -88,7 +88,7 @@ public function execute()
         } catch (\Exception $e) {
             $this->logger->critical($e);
             $result = [
-                'error' => _('UI component could not be rendered because of system exception'),
+                'error' => __('UI component could not be rendered because of system exception'),
                 'errorcode' => $this->escaper->escapeHtml($e->getCode())
             ];
             /** @var \Magento\Framework\Controller\Result\Json $resultJson */