Comment 12 for bug 1314043

We have a fix/workaround in place for the empty submission bug in Plainbox.

To apply the fix, please, update to the latest version of plainbox/checkbox (including the certification providers) and you will see that there is a new job in the certification provider called

miscellanea/submission-resources

Add this job to your whitelists and make sure it is always selected to be run in the selection screen.