[TASK] Fixing exception in updateSendingTime Wizard

Classes/Updates/UpdateSendingTimes.php

@@ -59,8 +59,8 @@ class UpdateSendingTimes extends AbstractUpdate {
 		/** @var DatabaseConnection $databaseConnection */
 		$databaseConnection = $GLOBALS['TYPO3_DB'];
 
-		// are there site root columns differing from pids?
-		$where = 'sent = TRUE AND last_sending_time = 0';
+		// are there sent emails ?
+		$where = 'sending_time > 0 AND last_sending_time = 0';
 
 		$result = $databaseConnection->exec_SELECTquery('*', $this->table, $where);
 		if ($result->num_rows > 0) {
@@ -81,8 +81,8 @@ class UpdateSendingTimes extends AbstractUpdate {
 		/** @var DatabaseConnection $databaseConnection */
 		$databaseConnection = $GLOBALS['TYPO3_DB'];
 		$dbQueries = [];
-		$where = 'sent = TRUE AND last_sending_time = 0';
-		$result = $databaseConnection->exec_SELECTquery('uid, tstamp', $this->table, $where)->fetch_all();
+		$where = 'sending_time > 0 AND last_sending_time = 0';
+		$result = $databaseConnection->exec_SELECTquery('uid, sending_time', $this->table, $where)->fetch_all();
 		$dbQueries[] = $databaseConnection->debug_lastBuiltQuery;
 
 		/** @var array $result */