Fatal error on login on line 69

[realmobile]

Thank you.
"You can set them to never run in your configuration settings under the setup menu, and you wont notice the difference."

Do you mean we can turn the 'optimization' off and we will not notice the difference in performance and will not get this error and log in right away?
If so, where in 'setup' do I find this feature to turn off?

Thanks