PHP 8 Cornerstone - Sitecrash

[liptonicetea1]

Since yesterday or this morning, I am no longer able to edit pages in the backend using the Cornerstone plugin. I have installed the x theme and played a backup from yesterday without success. I receive an error message after clicking "edit with cornerstone.
Error: The page you are looking for is no longer here, or never existed in the first place (bummer). You can try searching for what you are looking for using the form below. If that still doesn’t provide the results you are looking for, you can always start over from the home page.

Frontend is still working. Please respond quickly!

[ruenel]

Hey @liptonicetea1,

I have logged in and edited the homepage in Cornerstone with no issues.

It took a while to load the page in the builder though. It could be because of your server settings. You can check it in Tools > Site Health > Info > Server. Make sure to resolve any performance issues.

Best Regards.

[liptonicetea1]

Hey, thanks for taking a look. I deactivated a caching plugin, after that it worked.

[tristup]

Hi @liptonicetea1,

Glad that it worked.

Thanks