Attempt to assignproperty"cPathFetchIsCanonical"on null

I failed to update to 9.4.1, so I restored the config folder and database from 9.3.9 before the update.

When I access the site, I get the following error.

Attempt to assignproperty"cPathFetchIsCanonical"on null

Please advise if you know how to deal with this.

Related threads.

It’s fixed!

I’m not sure exactly where it was, but it started appearing after I replaced the config folder.
Thank you.

Did you do anything to solve this or did it simply go away?

Changed the recovery of the Config folder from updating the files to replacing them.
I’m not sure what the difference is, but I think “concrete.php” couldn’t be recovered.