[-] MO : statsnewsletter - SQL error

modules/statsnewsletter/statsnewsletter.php

@@ -87,7 +87,8 @@ class StatsNewsletter extends ModuleGraph
 
 		$sql = 'SELECT COUNT(*) as visitors
 				FROM '._DB_PREFIX_.'newsletter
-				WHERE '.$this->sqlShopRestriction().'
+				WHERE 1
+				   '.$this->sqlShopRestriction().'
 					AND `newsletter_date_add` BETWEEN '.ModuleGraph::getDateBetween();
 		$result2 = Db::getInstance(_PS_USE_SQL_SLAVE_)->getRow($sql);
 		return array('customers' => $result1['customers'], 'visitors' => $result2['visitors'], 'both' => $result1['customers'] + $result2['visitors']);