The integration of MDL-59473 has broken the picasa repository (and possibly others).
The picasa API seems to only support XML, but MDL-59473 forced the oauth2_client to deal only with JSON, hence it is broken.
CLONE - A student can choose from a number of portfolios to export data to
Poor Validation of Oauth2 Token Response causes a loop of redirections
Error rendering 'clockify-timesheets-time-tracking-reports:timer-sidebar'. Please contact your Jira administrators.