Hi,
@TiaNex Shopping, Unfortunately, turning on debug mode will not help me because the error does not appear every time, only from time to time.
@Obsidrian Drama, no shop are still 1.7.8.
@Zohaib-fk, already tested and shop work good for visitors
This error appears from time to time and is not dependent on a specific activity in the store. I tried deleting the cache manually but it didn't help