Technical error: Unexpected response returned by server. Import stopped.

[Daniel On]

Hi,

We need advice / help with prestashop.

We have a store with 30k products. We have already imported all the products. Our only issue is broken images.

So, we have decided to import only ID and URL of images to fix it. And we got that error:

• Technical error: Unexpected response returned by server. Import stopped.

- We  tried to import only one product and the error message is the same.

- We use 1.7.5.1 version.

- The developer tool doesn't say much.

- The error show up after validation.

If you have any ideas, please give your opinion.

Thank you,