After updating Joomla 3.9 - Class 'JoomlaCMSCacheCache' not found

I have updated Joomla to 3.9 and now I see this error every time I try to load the website:

Error: Class ‘JoomlaCMSCacheCache’ not found: Class ‘JoomlaCMSCacheCache’ not found

Error reporting is already at maximum, I can’t access the back-end as well. Tried to find a way to fix it, but only found dead-ends.