After upgrading All orders not showing

Wordpress : 5.6.2
Woocommerce : 5.1.0
Woocommerce database : 5.0

Hi,
My customer made the update of woocommerce and WordPress.
All update (plugins and Woocommerce Db) went well without errors.
But after that, we have a problem in Admin -> Woocommerce -> Orders.
We see in All the number 6156 but when we click on it we have just 3883 orders which are displayed. Some orders are not displayed (olders or recents).
In Woocommerce -> Status :we can see we have 6156 orders
Could you help us ?