Try opening a page in the front end - if it's blank, just reload the page and everything will show up again. ;) I'm having the same problem.

Looks like there's a cache issue.

Hi there!

Thank you for bringing this to our attention, and I sincerely apologize for the inconvenience caused.

To assist you more effectively, may I kindly request temporary administrative access to your site? This will allow me to thoroughly investigate and resolve the issue for you.

Before sharing the credentials, I strongly recommend taking a complete backup of your site to ensure all data remains secure.

Looking forward to your response.

Best regards