Jira issue originally created by user talus:
In the /tools/sandbox/cli_config.php, you decided to use a HelperSet rather than an array ; the thing is, it is not traversable via a foreach. So, the foreach that is just underneath this declaration is not iterating over the set, and the sets "em" and "db" are not declared...
Issue was closed with resolution "Won't Fix"
Comment created by @asm89:
There is no foreach underneath the declaration.