Hi,
I'm being having a look to your app. Though I'm not an expert, I see that you open 20 (more or less) screens when the suggested limit is no more than 10. Please take a look to this thread:
I guess it's not related to you issue, but be careful, anyway.
More:
I've tried to see the websites you set in your global variables
but if I put these links in my browser (Chrome), the relevant pages remain blank. I'm from Italy, so I'm not sure if there are some limitations from my country, but are you sure that you can get those pages ? Since it seems that you get back empty strings, which generate the error:
Please check.