Hi,

This issue caused by the URL on the footer of AMP version is wrong.

Please go to Appearance > Customizer AMP ( NOT "Customize" ) > Footer > Footer Copyright > and change this code:

<a href="http://debienbonnesidees.fr=De Bien Bonnes Idées" target="_blank">De Bien Bonnes Idées</a>

To:

<a href="http://debienbonnesidees.fr" target="_blank">De Bien Bonnes Idées</a>

Because your URL on AMP is wrong - It's not an URL:

http://debienbonnesidees.fr=De Bien Bonnes Idées

And AMP doesn't allow it.

When you done, you can check again your AMP page: https://www.sofia-beau.fr/amp/ via this validate page.

Also, if you want to disable AMP, please go to Plugins > All Plugins > deactivate plugin "Soledad AMP" from us.

Best Regards,

PenciDesign