Several issues: refresh page, preview ...

Hello

for several days, I have encountered several issues when I create or modify a post on my blog:

1_ when I click on preview I have an error message informing me that something has not worked and asks me to do a refresh of the page, which is not enough and I am forced to exit and return to the site manager

2- when I come back to the "Drafts" tab after having been in other tabs (for example: events), the list of draft posts does not display, or I also have an error message, same above.

This happens on any browser: Chrome, Safari, FireFox

and on 2 different sites that I manage.

https://www.associationsportivegolfsaintthomas.com/

https://lescoachings2cako.wixsite.com/lc2c