The cache directory must be published under the webroot (or you can set the concrete.cache.directory_relative configuration option) after moving my site

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I moved my site one level up my site seems to be broken.
I have that message:
The cache directory must be published under the webroot (or you can set the concrete.cache.directory_relative configuration option)

I found some could fix it by editing /concrete/config/site.php but this file is not present at that location.

I run Concrete5 5.7.3

Thanks in advance for any help,
Pascal