[TASK] Fixing missing pid issue, and defualt lang issue

Classes/Service/MailTemplateService.php

@@ -80,7 +80,7 @@ class MailTemplateService {
 	/**
 	 * @var string $language
 	 */
-	private $language;
+	private $language = 'default';
 
 	/**
 	 * @var boolean $ignoreMailQueue
@@ -169,7 +169,6 @@ class MailTemplateService {
 		/** @var TypoScriptSettingsService $typoScriptSettingsService */
 		$typoScriptSettingsService = $this->objectManager->get(TypoScriptSettingsService::class);
 		$this->tsSettings = $typoScriptSettingsService->getSettings(0, 'tx_sgmail');
-		$this->language = $this->tsSettings['templateDefaultLanguage'];
 		/** @var TemplateRepository templateRepository */
 		$this->templateRepository = $this->objectManager->get(TemplateRepository::class);
 		/** @var PersistenceManager persistenceManager */
@@ -322,6 +321,9 @@ class MailTemplateService {
 			$pageUid = (int) GeneralUtility::_GP('id');
 		}
 
+		if ($this->pid) {
+			$pageUid = $this->pid;
+		}
 		$siteRootId = BackendService::getSiteRoot($pageUid);
 
 		/** @var Template $template */
@@ -766,7 +768,9 @@ class MailTemplateService {
 			$templateDirectory .= ucfirst($part);
 		}
 		$templateDirectory .= '/';
-		$templatePath = ExtensionManagementUtility::extPath($extensionName) . self::DEFAULT_TEMPLATE_PATH . $templateDirectory;
+		$templatePath = ExtensionManagementUtility::extPath(
+				$extensionName
+			) . self::DEFAULT_TEMPLATE_PATH . $templateDirectory;
 
 		if ($config['template_path']) {
 			$templatePath = $config['template_key'];