// Replace shop->addSqlRestriction() and shop->addSqlRestrictionOnLang() by static versions

modules/statsnewsletter/statsnewsletter.php

@@ -82,14 +82,14 @@ class StatsNewsletter extends ModuleGraph
 		$sql = 'SELECT COUNT(*) as customers
 				FROM `'._DB_PREFIX_.'customer`
 				WHERE 1
-					'.$this->sqlShopRestriction(Shop::SHARE_CUSTOMER).'
+					'.Shop::addSqlRestriction(Shop::SHARE_CUSTOMER).'
 					AND `newsletter_date_add` BETWEEN '.ModuleGraph::getDateBetween();
 		$result1 = Db::getInstance(_PS_USE_SQL_SLAVE_)->getRow($sql);
 
 		$sql = 'SELECT COUNT(*) as visitors
 				FROM '._DB_PREFIX_.'newsletter
 				WHERE 1
-				   '.$this->sqlShopRestriction().'
+				   '.Shop::addSqlRestriction().'
 					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']);
@@ -105,13 +105,13 @@ class StatsNewsletter extends ModuleGraph
 		$this->_query = 'SELECT newsletter_date_add
 				FROM `'._DB_PREFIX_.'customer`
 				WHERE 1
-					'.$this->sqlShopRestriction(Shop::SHARE_CUSTOMER).'
+					'.Shop::addSqlRestriction(Shop::SHARE_CUSTOMER).'
 					AND `newsletter_date_add` BETWEEN ';
 
 		$this->_query2 = 'SELECT newsletter_date_add
 				FROM '._DB_PREFIX_.'newsletter
 				WHERE 1
-					'.$this->sqlShopRestriction(Shop::SHARE_CUSTOMER).'
+					'.Shop::addSqlRestriction(Shop::SHARE_CUSTOMER).'
 					AND `newsletter_date_add` BETWEEN ';
 		$this->setDateGraph($layers, true);
 	}