Gallery block images no longer displaying

Site URL: https://www.michelleheon.com/installations-fr-michelle

Hello!  My client's website has stopped displaying Masonry Gallery images on this ONE page. 

https://www.michelleheon.com/installations-fr-michelle

They still work on this page:    https://www.michelleheon.com/installations-en-michelle

I cannot see any reason for this. 

Help?? 

Do you add any custom code to Page Header?

Not on that page, no!  I did on another page with a masonry gallery and THAT one is working.

The original Installation page stopped working 2 days ago.   It was fine on the weekend.

Original page:  https://www.michelleheon.com/installations-fr-michelle

The page that DOES work is the unfinished English page:  

https://www.michelleheon.com/installations-en-michelle

Custom header code on English page:

Yes. That is strange

Try access this link https://corn-red-jy2d.squarespace.com/config/safe

& check to see if problem still appears or disappear.

Then link will open your site in disabled-mode-code.

If problem still appears, you should contact SS Customer Care.

If problem disappear, the custom code caused this, you should check all custom code on your site

Thank you!  I actually just rebuilt the page - my client needed it ready ASAP.  🙂

I will definitely test your suggestion, though!