Library tab : link brocken when importing new images

Hello,

I have moved my website to another host. Everything seems fine except when I want to import a new image :

The pop-up opens fine and I can import the image. But when I want to take a look at the library or galleries tabs, I get an error message saying that the pages cannot be found on the server. In fact those links are pointing to : https://wp-admin/media-upload.php… Instead of pointing to : https://www.mywebsite.com/wp-media-upload.php…

Any idea were I can correct this ?

Thank you for your help on this ??