Bug with sidebar

Good morning,

I am french and I hope you will understand me.
My problem appears only on pages of my website on which appears sidebar.
There is a line on top right that appears.
You can see it on page https://soins-energetiques-a-domicile.fr/category/posts-de-valeur/ for example.
It doesn’t appears on page
https://soins-energetiques-a-domicile.fr/

Could you please help me ?

Thank you very much.

Stéphanie Lantoine

The page I need help with: [log in to see the link]