Handle case when meta_agents are None.
Handle case when meta_agents are None.

sorgerlab/indra,bgyori/indra,johnbachman/indra,bgyori/indra,bgyori/indra,johnbachman/belpy,sorgerlab/belpy,johnbachman/indra,johnbachman/indra,johnbachman/belpy,sorgerlab/indra,sorgerlab/belpy,sorgerlab/indra,sorgerlab/belpy,johnbachman/belpy