fails on repos making up CV

TASK [sync-satellite-org : Lookup repos for CV cv-rhel7-base] *********************************************************
ok: [rhte-satellite.oldstable.me.uk] => (item=4)
fatal: [rhte-satellite.oldstable.me.uk]: FAILED! => {"msg": "Unexpected templating type error occurred on ({{ cv_lookup + [ {\"Name\": repo, \"Product\": product} ] }}): can only concatenate str (not \"list\") to str"}

[pcfe@rhte-satellite ~]$ hammer content-view info --name cv-rhel7-base
ID:                           6
Name:                         cv-rhel7-base
Label:                        cv-rhel7-base
Composite:                    false
Description:                  
Content Host Count:           0
Organisation:                 SourceOrg
Yum Repositories:             
 1) ID:    1
    Name:  Red Hat Enterprise Linux 7 Server RPMs x86_64 7Server
    Label: Red_Hat_Enterprise_Linux_7_Server_RPMs_x86_64_7Server
 2) ID:    3
    Name:  Red Hat Satellite Tools 6.5 for RHEL 7 Server RPMs x86_64
    Label: Red_Hat_Satellite_Tools_6_5_for_RHEL_7_Server_RPMs_x86_64
 3) ID:    4
    Name:  Red Hat Enterprise Linux 7 Server Kickstart x86_64 7.7
    Label: Red_Hat_Enterprise_Linux_7_Server_Kickstart_x86_64_7_7
Container Image Repositories: 

OSTree Repositories:          

Puppet Modules:               

Lifecycle Environments:       

Versions:                     

Components:                   

Activation Keys:

nstrug / sync-satellite-org

fails on repos making up CV #21