Can't assign a reports profile in module configuration

Hi there,

I tried to install the google analytics reports module several times and not get it to work (beta2 for Drupal 7).
The problem I have is that I can't load a profile (as you can see in image1, reports profile dropdown is empty). I tried to completely uninstall and reinstall as counsel in several posts but the result is the same.

The error generated that I can see in the Drupal logs is: image2.

Anyone have any idea of what is the problem or how to solve it?

Thank you.