With these latest changes:

https://github.com/signalpoint/DrupalGap/issues/376

You may receive this warning:

template_process_page - TypeError: Cannot read property 'replace' of undefined

To fix this, you just need to clear Chrome's cache:

Settings -> History -> Clear browsing data -> Cached images and files

"From the beginning of time"

And then apply these changes to your page.tpl.html file in your theme(s):

https://github.com/signalpoint/DrupalGap/blob/7.x-1.x/UPGRADE.md#new-pag...