I suggest try what eCommerce Core wrote...
Also, most errors can be solved by doing a plain web search or google search or whatever search engine you prefer to use:
https://www.google.com/search?q=how+to+disable+opcache1st link that popped up is:
http://stackoverflow.com/questions/21556437/disable-opcache-temporallySame answer as posted above.
I honestly solve nearly all my cart problems or any coding, excel, you name it...problem by doing a search. Almost in all cases, someone has had the same problem as you before so you can fix it and move on quickly afterwards...
If there are NO matches, then either no one else has the problem (and more likely, your config or setup is wrong) or it's too new. Most things we do aren't new/leading/bleeding edge...so I lean towards if an error is only affecting me and I can't find another instance of it, then it's only in my site.
Good luck. This should be straight forward to fix.