strange notice on the home page

after making a change to the home appeared to me this warning, I tried to clear the home and disappear, I do not know what to do, can you help?
I tried to disable plugins, but no result …
I have all the latest versions of wp, theme and jscomposer

thank you

Hi

Try to restore the page to some older version: http://screencast.com/t/PfDyLmE4ja – http://screencast.com/t/bHeKzwuq8b and check if the error still appear on the page. If you made any modification in theme’s code try to undo them, also if your using any html/js raw make sure that the code added it’s valid, otherwise could create issues.
Last thing but not least, make sure you deactivate all plugins except Visual Composer, clear all caches and test again.
Let me know how it goes!

Thanks!