ACP2E-203: Issues with admin actions report logging

Author: Jon Doe

app/code/Magento/Customer/Model/ResourceModel/CustomerRepository.php

@@ -299,9 +299,9 @@ public function save(CustomerInterface $customer, $passwordHash = null)
 
     /**
      * @param CustomerModel $customerModel
-     * @param array $prevCustomerDataArr
+     * @param ?array $prevCustomerDataArr
      */
-    private function populateWithOrigData(CustomerModel $customerModel, array $prevCustomerDataArr)
+    private function populateWithOrigData(CustomerModel $customerModel, ?array $prevCustomerDataArr)
     {
         if (!empty($prevCustomerDataArr)) {
             foreach ($prevCustomerDataArr as $field => $value) {