Page Builder Broken

After a clean install of the theme, I started using the page builder, but after a few saves it’s stopped working, it returns a blank page in the browser.
So i went to tail my webserver apache error log as i reload the page builder, I can see it triggering this error:

[error] PHP Warning: Invalid argument supplied for foreach() in /var/www/html/wp-content/themes/oblivion/pagebuilder/functions/pb_functions.php on line 91

The page builder was working in the beginning, not sure if it’s something i saved thats broken this. Is there a safe way to reset data made by the page builder plugin ?

Thank you in advance.