[BUGFIX] Add mandatory wizard identifiers

Classes/Updates/MigrateData.php

@@ -33,6 +33,8 @@ use TYPO3\CMS\Install\Updates\AbstractUpdate;
  * Migrate template db entries to the correct root pages
  */
 class MigrateData extends AbstractUpdate {
+
+	protected $identifier = '';
 	/**
 	 * @var string
 	 */

Classes/Updates/UpdateGermanAsDefault.php

@@ -33,6 +33,12 @@ use TYPO3\CMS\Install\Updates\AbstractUpdate;
  *    Makes german templates the default and former default as english templates
  */
 class UpdateGermanAsDefault extends AbstractUpdate {
+
+	/**
+	 * @var string
+	 */
+	protected $identifier = 'tx_sgmail_update_german_as_default';
+
 	/**
 	 * @var string
 	 */

Classes/Updates/UpdateLanguages.php

@@ -34,6 +34,12 @@ use TYPO3\CMS\Install\Updates\AbstractUpdate;
  * Fix all incorrect / deprecated language codes (be languages instead of sys languages) in the database
  */
 class UpdateLanguages extends AbstractUpdate {
+
+	/**
+	 * @var string
+	 */
+	protected $identifier = 'tx_sgmail_update_languages';
+
 	/**
 	 * @var string
 	 */

Classes/Updates/UpdatePidToSiteRoot.php

@@ -34,6 +34,12 @@ use TYPO3\CMS\Install\Updates\AbstractUpdate;
  * Migrate template db entries to the correct root pages
  */
 class UpdatePidToSiteRoot extends AbstractUpdate {
+
+	/**
+	 * @var string
+	 */
+	protected $identifier = 'tx_sgmail_update_pid_to_site_root';
+
 	/**
 	 * @var string
 	 */

Classes/Updates/UpdateSendingTimes.php

@@ -33,6 +33,11 @@ use TYPO3\CMS\Install\Updates\AbstractUpdate;
  * Update the correct sending times (if any)
  */
 class UpdateSendingTimes extends AbstractUpdate {
+	/**
+	 * @var string
+	 */
+	protected $identifier = 'tx_sgmail_update_sending_times';
+
 	/**
 	 * @var string
 	 */