How to regenerate thumbnails on PrestaShop store after migration?

If your images were not regenerated after migration and look like:

instead of

 

you can fix this issue manually, following this instruction:

1. Login to your PrestaShop Admin Area

2. Open Design from the Left Nav Menu in the Improve section

3. Go to Image Settings from the drop-down menu
4. Tap to Regenerate Thumbnails button and check the result

Happy Migration!