Frontend error

I'm sure then it's 2.0.5.
The server remains the same and there is nothing new.
It occurs to me that it has something to do with the latest update of joomla 2.8.3 that came out a few days ago

It will not have anything to do with the frontend template?
It is created with Template Creator CK

No, the template is not, I have put the default joomla and the same error is still happening.
So we are discarding possibilities.