We have had a few similar reports.
Both CCleaner and Chrome got updated on consequtive days, on the 27th and 28th of May.
It appears that the new Chrome version (137) has changed where it stores some things, and so the CCleaner developers now have to catch up with what has been changed.
It happens now and again with Chrome, Firefox, and other browser. and when it does we just have to wait for the CCleaner devs to catch up where the broswer is now putting it’s caches, logfiles, etc.
TBH though that’s usually not until the next months CCleaner update is released.
It’s unusual to put a special update out, but it does sometimes happen.
So you will probably have to put up with it for (at least) 3 or 4 weeks until v6.37 is released