AMP Gallery carousel is blank

on your link, there are lot of carousels, can you tell me which one are you talking about exactly?

A screenshot would really help.

Generally under all galleries the carousel is empty. On this link is only one gallery:

the screenshot is here

Best regards

By default, the galleries are without the thumbnails, but you can change it from,
WP Dashboard > AMP Options panel > Design > Single > WordPress Content Gallery and then select the designs. See this screenshot for the help: https://monosnap.com/file/jzgdObG2aEHB72tsOGyPxMCVow3MzX

Thank you for your response.

The problem is the second option: carousel with thumbnail, the thumbnails is missing, how can I get the thumbnails?

Do you have the second option selected in the options panel?

Yes! The second option is selected.

Thats really strange, can you try to use the 1st or the 3rd option and see whats the output of those?