Images Not Visible

Problem/Motivation

I installed responsive image module in my site. I configure breakpoints and responsive images and style, after that i assigned image style to teaser. But image not displayed in teaser.

Proposed resolution

Changed the $variables['breakpoints']['mapping'] to a 2 dimensional array as the machine name of breakpoints is available only in the second dimension. With this the images are visible. Attached patch.

This is verified to be working on a local installation at my end.